m n t (5x+2)° (4x+6)°

The alternative hypothesis should state P1 - P2 > 0 if we are interested in testing whether the proportion of items in population 1 is larger than the proportion of items in population 2. The answer is a.

When testing hypotheses about the difference between two population proportions, we want to determine whether there is sufficient evidence to conclude that there is a significant difference between the two proportions.

The null hypothesis for this test states that the difference between the two population proportions is equal to zero, while the alternative hypothesis states that the difference is either greater than or less than zero.

If we are interested in testing whether the proportion of items in population 1 is larger than the proportion of items in population 2, we are specifically looking for evidence that supports the idea that P1 is greater than P2. Therefore, the alternative hypothesis should state P1 - P2 > 0, indicating that the difference between the two proportions is positive.

On the other hand, if we were interested in testing whether the proportion in population 1 is smaller than the proportion in population 2, the alternative hypothesis would be P1 - P2 < 0. Finally, if we simply want to test whether the two proportions are not equal, the alternative hypothesis would be P1 - P2 ≠ 0. The answer is a.

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The margin of error of this poll, at the 95% confidence level, is approximately 0.0993 or 9.93%.

To find the margin of error of a poll, we need to know the sample size and the confidence level. In this case, we have a sample size of 110 and a confidence level of 95%.

First, we need to find the standard error of the proportion:

standard error = [tex]\sqrt{(p\times (1-p)/n)}[/tex]

where p is the proportion who like dogs and n is the sample size.

p = 0.66

n = 110

[tex]standard error = \sqrt{(0.66 \times (1-0.66)/110)}[/tex]

              = 0.0507

Next, we need to find the critical value for a 95% confidence level. Since we have a large sample size (110), we can use the z-score table for a normal distribution. The critical value for a 95% confidence level is 1.96.

Finally, we can find the margin of error:

margin of error = critical value × standard error

               = 1.96 × 0.0507

               = 0.0993

Therefore, the margin of error of this poll, at the 95% confidence level, is approximately 0.0993 or 9.93%. This means that we can be 95% confident that the true proportion of people who like dogs in the population is between 66% +/- 9.93%.

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The original cost for the shoes at Best Footwear was $161.

Shoe sales price: 0.8 * original price = $115

By dividing both sides by 0.8,

original price = $115 / 0.8 = $143.75

We may now utilize the information about Best Footwear to determine the original pricing. We know that Best Footwear's sale price is $7 less than Everything Shoes' original pricing after the 20% reduction.

Let' x reflect the original Best Footwear price:

x - 0.15x = $143.75 - $7

Simplifying and calculating

x: 0.85x = $136.75

x = $161

Therefore, the original cost for the shoes at Best Footwear was $161.

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The equation of the hyperbola is y²/9 - x²/25 = 1

Given data ,

The equation of a hyperbola centered at the origin (0,0), with the foci at (0,3) and (10,3), and a y-radius of 1, can be written in the form:

y²/a² - x²/b² = 1

where "a" is the distance from the center to the vertices along the y-axis, and "b" is the distance from the center to the vertices along the x-axis.

Now , the foci are at (0,3) and (10,3), the distance from the center to the vertices along the y-axis is 3 units (which is the y-radius), so "a" is 3

The distance between the foci along the x-axis is 10 units, so "2b" is 10,which means "b" is 5

Plugging these values into the equation, we get:

y²/3² - x²/5² = 1

Simplifying, we get:

y²/9 - x²/25 = 1

Hence , the equation is y²/9 - x²/25 = 1

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The height in centimeters of the platform is 48.9 centimeters.

To find the height in of the platform formed by spreading the dirt dug out of a well is;

Step 1: Calculate the volume of the well.
The well is in the shape of a cylinder, so we can use the formula for the volume of a cylinder: V = πr^2h, where V is the volume, r is the radius, and h is the height (depth in this case). The diameter is 2.8 meters, so the radius is half of that, which is 1.4 meters.

V = π(1.4^2)(15)
V ≈ 92.4 m^3

Step 2: Calculate the volume of the platform.
Since the volume of the dirt in the well is equal to the volume of the dirt used to form the platform, we can set up an equation to find the height (h) of the platform.

Volume of the platform = Length x Width x Height
92.4 = 31.5 x 6 x h

Step 3: Solve for the height (h).
92.4 = 189h
h ≈ 0.489 meters

Step 4: Convert the height to centimeters and round to the nearest tenth.
0.489 meters = 48.9 centimeters

So, the height of the platform is approximately 48.9 centimeters.

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The probability that the student was NOT a male that got a "B" is 62/68, which can be simplified to 31/34. To find the probability that the student was NOT a male that got a "B," we need to first calculate the total number of students that fit this criteria.

From the table, we know that there were a total of 26 students who did not receive a "B" (15 females and 11 males). Out of those 26 students, there were 11 males who did not receive a "B".

Therefore, the probability of choosing a student who was NOT a male that got a "B" is:

(15 + 11) / 68 = 26 / 68 = 0.382 or approximately 38.2%

So the probability that the student chosen at random was NOT a male that got a "B" is 0.382 or 38.2%.

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When you draw 3 balls with replacement from an urn with 2 red, 2 black, and 2 white balls, the probability of drawing exactly 1 ball from each color is 1/27 or approximately 0.037.

To calculate the probability of drawing exactly 1 ball from each color when you draw 3 balls with replacement from an urn with 2 red, 2 black, and 2 white balls, you need to use the multiplication rule of probability.

First, let's find the probability of drawing one red ball with replacement. Since there are 2 red balls in the urn and 6 total balls, the probability of drawing a red ball is 2/6 or 1/3.

Similarly, the probability of drawing one black ball with replacement is also 1/3, and the probability of drawing one white ball with replacement is also 1/3.

Using the multiplication rule, we can find the probability of drawing exactly 1 ball from each color when you draw 3 balls with replacement by multiplying the probabilities of drawing one ball of each color together:

P(drawing 1 ball of each color) = (1/3) x (1/3) x (1/3)

P(drawing 1 ball of each color) = 1/27

Therefore, the probability of drawing exactly 1 ball from each color when you draw 3 balls with replacement from an urn with 2 red, 2 black, and 2 white balls is 1/27 or approximately 0.037.

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The correct answer is c) Yes, because there are significant differences in the slopes of the lines.

we cannot ignore the interaction between the factors when interpreting the results of the experiment.

An interaction plot is a graphical representation of the interaction between two factors in an experiment. It shows how the response variable changes across different levels of the two factors. If there is no interaction between the factors, the lines on the plot will be relatively parallel. If there is a significant interaction, the lines will cross or have different slopes.

In this case, the fact that there are significant differences in the slopes of the lines suggests that there is a significant interaction between the factors. This means that the effect of one factor on the response variable depends on the level of the other factor. Therefore, we cannot ignore the interaction between the factors when interpreting the results of the experiment.

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The probability of Greg winding up wearing the white shirt and tan pants when getting dressed in the dark is 1/8 or 12.5%.

The probability of Greg wearing the white shirt and tan pants when getting dressed in the dark can be calculated by finding the probability of each event occurring independently and then multiplying those probabilities together.

First, let's find the probability of Greg choosing the white shirt. He has 4 shirts to choose from, so the probability of picking the white shirt is 1/4 (one white shirt out of four total shirts).

Next, let's find the probability of Greg choosing the tan pants. He has 2 pairs of pants to choose from, so the probability of picking the tan pants is 1/2 (one tan pair out of two total pairs).

Now, we can multiply the two probabilities together to find the overall probability of Greg wearing the white shirt and tan pants: (1/4) * (1/2) = 1/8.

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The probability that the mean of the sample would differ from the population mean by less than 2.8 points if 63 exams are sampled is 0.9592 or approximately 95.92%.

It is necessary to determine the region under the normal distribution curve between -2.8/0.5916 and 2.8/0.5916 standard deviations from the mean in order to determine the likelihood that the sample mean deviates from the population mean by less than 2.8 points. We can use a standard normal distribution table or a calculator to find this probability.

Mean of the distribution of sample means = 103

Variance of the distribution of sample means = 169/63 = 2.68

Using the z-score method, we can determine the likelihood that the sample mean deviates from the population mean by no more than 2.8 points.:

z = (x - μ) / (σ / √(n))

where n is the sample size, x is the sample mean, is the population mean, is the population standard deviation (square root of the variance), and is the population mean.

Plugging in the values, we get:

z = (x - 103) / (√(169/63))

z = (x - 103) / 0.5916

We calculate the chance to be roughly 0.9592 using a conventional normal distribution table.

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The probability that the satellite system operates adequately is 0.7056.

The probability that a component is not functional is 0.4. Therefore, the probability that a component is functional is 1-0.4=0.6.
Using the rule of combinations, there are 6 possible combinations of functional and non-functional components:
1. All 4 components are functional: (0.6)^4=0.1296
2. 3 components are functional: (0.6)^3(0.4)=0.3456
3. 2 components are functional: (0.6)^2(0.4)^2=0.2304
4. 1 component is functional: (0.6)(0.4)^3=0.0256
5. No components are functional: (0.4)^4=0.0256
6. At least 2 components are functional: P(2 or 3 or 4) = 0.1296 + 0.3456 + 0.2304 = 0.7056
Therefore, the probability that the satellite system operates adequately is 0.7056.

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The population of birds may develop changes in their beak shape and size over time to better adapt to the new food source through the process of evolutionary adaptation.

It appears you'd like to know what would happen to the beaks of a bird population that finds a new type of food that is equally tasty but different in shape and size.
Over time, the beaks of the bird population may undergo adaptation through natural selection.

As the birds start to consume the new type of food, individuals with beak shapes better suited for handling the different shape and size of the new food will have a higher chance of survival and reproduction.

This would lead to the spread of the advantageous beak trait throughout the population.
In summary, the beaks of the bird population may gradually change to better accommodate the new food source, driven by the process of natural selection.

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The correct option is B. The complete collection of all elements, individuals, measurements, scores, or other entities that are of interest and relevant to a particular study or analysis is called the population.

A collection is a group of items that have been gathered or accumulated together based on a particular theme or purpose. Collections can be made up of physical objects such as books, stamps, coins, or artwork, as well as digital items like photos, music, or videos. Collections can also refer to data structures in computer programming that hold groups of related items.

People often collect items as a hobby or passion, and the act of collecting can bring a sense of fulfillment, enjoyment, and satisfaction. Collections can have both sentimental and monetary value, and they may be displayed in personal or public settings, such as museums or galleries. The process of collecting often involves researching and acquiring new items, as well as organizing and preserving the existing collection.

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Thus, based on the trend and seasonal factors, we can forecast that Tucson Machinery, Inc. will sell $42 million worth of numerically controlled machines in 2010.

Tucson Machinery, Inc.'s sales data for the past two years can be used to forecast sales for 2010.

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The probability that either of the compartments has at least two coins that landed heads is 161/192.

To solve this problem, we can use the principle of inclusion-exclusion.

Let A be the event that the first compartment has at least two coins that landed heads, and let B be the event that the second compartment has at least two coins that landed heads. We want to find the probability of the union of these events: P(A ∪ B).

To compute P(A ∪ B), we need to compute the probabilities of A, B, and A ∩ B.

The probability of A is the probability that at least two of the three coins landed heads in the first compartment, and the remaining coin landed tails in either compartment. There are three ways this can happen:

HHT (with probability 1/8)

HTH (with probability 3/8)

THH (with probability 3/8)

So, the probability of A is (1/8) + (3/8) + (3/8) = 7/8.

Similarly, the probability of B is also 7/8.

To compute the probability of A ∩ B, we can use the multiplication rule:

P(A ∩ B) = P(A) × P(B | A)

where P(B | A) is the probability that the second compartment has at least two coins that landed heads, given that the first compartment has at least two coins that landed heads.

To compute P(B | A), we can condition on the number of heads in the first compartment:

If the first compartment has exactly two heads, then there is only one way to distribute the remaining coin, which is to put it in the second compartment. So, the probability of B in this case is 1/2.

If the first compartment has three heads, then there are three ways to distribute the remaining coin, two of which result in the second compartment having at least two heads. So, the probability of B in this case is 2/3.

Therefore,

P(B | A) = (1/2) × P(first compartment has exactly two heads) + (2/3) × P(first compartment has three heads)

= (1/2) × (3/8) + (2/3) × (1/8)

= 7/24.

Hence,

P(A ∩ B) = (7/8) × (7/24) = 49/192.

Now, we can apply the inclusion-exclusion principle:

P(A ∪ B) = P(A) + P(B) - P(A ∩ B)

= (7/8) + (7/8) - (49/192)

= 161/192.

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The probability that someone has two aces given that they have one ace is 3/51, or about 5.88%. The probability that someone has two aces given that they have the ace of spades is 2/50, or about 4%.

To see why these probabilities are different, consider that knowing someone has one ace doesn't give you any information about whether they have a second ace.

The probability of drawing an ace from a standard deck of 52 cards is 4/52, or 1/13. Therefore, the probability of drawing two aces is (1/13) * (3/51), which is about 0.0588.

On the other hand, if you know that someone has the ace of spades, then you know that one of the two aces has already been accounted for. The probability of drawing the other ace is now 2/50, or 1/25.

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Cable television is a form of television programming that is delivered to subscribers through a coaxial or fiber-optic cable network. It typically offers a wide range of channels and programming options, including news, sports, movies, and TV shows.

For the residents of Oak Vista, cable television is a mandatory service that is included in their monthly rent or housing fees. This means that all residents are required to pay $60 per month for the cable TV service, regardless of whether they use it or not. This is known as a bundled service, where a single fee is charged for multiple services or products.

The reason for the mandatory cable TV service is likely due to the fact that the apartment complex has a contract with a cable TV provider, and the cost of the service is spread across all residents. Additionally, offering a bundled service can be a way for the complex to offer a lower overall price for cable TV, since the cost is spread across a larger group of people.

While some residents may not want or need cable TV, the mandatory fee means that they must pay for the service regardless. However, some complexes may offer alternative options or allow residents to opt-out of the service for a reduced fee.

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The probability that a random sample of 36 gas stations will provide an average gas price within 0.50 of the population mean is 0.691, assuming that the population is normally distributed and the population standard deviation is known.

To calculate the probability that a random sample of 36 gas stations will provide an average gas price within 0.50 of the population mean, we need to use the central limit theorem and assume that the population is normally distributed.

Assuming that the population standard deviation is known, we can use the formula for the standard error of the mean:

SE = σ / √n

where SE is the standard error of the mean, σ is the population standard deviation, and n is the sample size.

Since we want the average gas price of the sample to be within $0.50 of the population mean, we can set up the following inequality:

|[tex]\bar X[/tex] - μ| < 0.50

where [tex]\bar X[/tex]is the sample mean and μ is the population mean.

We can rearrange this inequality as follows:

-0.50 < [tex]\bar X[/tex] - μ < 0.50

Next, we can standardize the sample mean by subtracting the population mean and dividing by the standard error:

-0.50 < ([tex]\bar X[/tex] - μ) / (σ / √n) < 0.50

Multiplying both sides by √n/σ, we get:

-0.50(√n/σ) < ([tex]\bar X[/tex] - μ) / σ < 0.50(√n/σ)

Finally, we can use the standard normal distribution to find the probability that the standardized sample mean falls within this interval. The probability can be calculated as follows:

P(-0.50(√n/σ) < Z < 0.50(√n/σ))

where Z is a standard normal random variable.

Using a standard normal table or a calculator, we can find that the probability is approximately 0.691.

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Question

What is the probability that a random sample of 36 gas stations will provide an average gas price (X¯) that is within $0.50 of the population mean (μ)?

Answer: 16384

Work Shown:

4^7 = 16384

There are 16,384 different sequences of answers for an exam with seven multiple-choice questions, each having four possible answers.

To determine the number of different sequences of answers for an exam with seven multiple-choice questions, each having four possible answers, we can use the counting principle.

The counting principle states that if there are 'n' ways to do one thing and 'm' ways to do another, then there are n * m ways to do both.

In this case, there are four possible answers for each of the seven questions. To calculate the total number of sequences, we can multiply the number of choices for each question together:

4 (choices for Q1) * 4 (choices for Q2) * 4 (choices for Q3) * 4 (choices for Q4) * 4 (choices for Q5) * 4 (choices for Q6) * 4 (choices for Q7)

This simplifies to:

4^7 (4 raised to the power of 7)

Calculating this value gives us:

4^7 = 16,384

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The statistical method of determining the link between dependent and outcome variables is called regression analysis. Here option B is the correct answer.

Regression analysis is a statistical method used to estimate the relationship between a dependent variable and one or more independent variables. The dependent variable is the outcome variable of interest, while the independent variable is the variable used to explain the variation in the dependent variable. Regression analysis is widely used in many fields such as economics, finance, psychology, engineering, and social sciences.

In a typical regression analysis, the relationship between the dependent variable and the independent variable(s) is estimated using a regression equation. The regression equation provides a mathematical formula to predict the value of the dependent variable based on the values of the independent variable(s). The regression equation can be used to identify the strength and direction of the relationship between the dependent and independent variable(s).

Regression analysis is useful for many purposes, such as understanding the factors that influence an outcome variable, predicting the value of the outcome variable based on the values of the independent variable(s), and evaluating the effectiveness of an intervention or treatment.

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Complete question:

______ analysis is the statistical process of estimating the relationship between dependent and ______ variables.

a) Time series, outcome

b) Regression, outcome

c) Time series, latent

d) Regression, independent

True, The 95% confidence interval (5.623 to 6.377) means that if we were to repeat this sampling process multiple times,

About 95% of the intervals we construct will contain the true population average number of lawnmowers sold. Since the sample size is 100, the Central Limit Theorem applies, and the distribution of sample means will be approximately normal, regardless of the population distribution.

Therefore, 95% of all possible samples of 100 stores drawn from the population of 1,000 stores will have a sample mean between 5.623 and 6.377 lawnmowers sold.

True. Based on the 95% confidence interval (5.623 to 6.377) calculated from the sample of 100 stores, it can be concluded that 95% of all possible sample means drawn from the population of 1,000 stores will fall within this range, with an average of 6 lawnmowers sold.

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The chi-square distribution is commonly used in statistical analysis to test for the independence of two categorical variables.

In such tests, the number of degrees of freedom associated with the chi-square distribution is a critical parameter.

The number of degrees of freedom for a chi-square test of independence is determined by the size and complexity of the contingency table that summarizes the relationship between the two categorical variables.

Specifically, it is calculated as the product of the number of rows minus one and the number of columns minus one.

When the contingency table is large and complex, the number of degrees of freedom associated with the chi-square distribution can be quite high. For example,

if we have a contingency table with 10 rows and 10 columns, the number of degrees of freedom will be (10-1)*(10-1) = 81.

In some cases, the number of degrees of freedom associated with the chi-square distribution can exceed 100 or even several hundred. This can occur when there are many categories for each variable and/or when the sample size is very large.

In general, as the number of degrees of freedom increases, the shape of the chi-square distribution becomes more symmetrical and bell-shaped.

This means that the distribution is more likely to be normal and that the results of the test of independence are more reliable. Overall, the number of degrees of freedom associated with the chi-square distribution is an important factor to consider

when conducting a test of independence. It reflects the complexity of the contingency table and affects the shape and reliability of the distribution.

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The equation is solved and the distributive property is used

Given data ,

a)

If you use the distributive property to solve the equation first, either addition or subtraction will need to be done last, depending on the equation. This is so that you may isolate the variable on one side of the equation or combine like terms after applying the distributive principle, which usually requires addition or subtraction as the last step.

b)

Instead, if you divide first to answer the problem, you would need to apply multiplication as the last operation. This is because, in order to "undo" the division operation and find the variable, you would need to multiply by the reciprocal of the value by which you had divided to isolate the variable. As the inverse operation of division, multiplication would be utilized as the last step in the equation's solution.

Hence , the equations are solved

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The table has been completed below.

An equation to represent the function P is P(x) = 4x.

In order to use the given linear function to complete the table, we would have to substitute each of the values of x (x-values) into the linear function and then evaluate as follows;

By substituting the given side lengths into the formula for the perimeter of a square, we have the following;

Perimeter of square, P(x) = 4x = 4(0) = A = 0 inches.

Perimeter of square, P(x) = 4x = 4(1) = B = 4 inches.

Perimeter of square, P(x) = 4x = 4(2) = C = 8 inches.

Perimeter of square, P(x) = 4x = 4(3) = D = 12 inches.

Perimeter of square, P(x) = 4x = 4(4) = E = 16 inches.

Perimeter of square, P(x) = 4x = 4(5) = F = 20 inches.

Perimeter of square, P(x) = 4x = 4(6) = G = 24 inches.

In this context, the given table should be completed as follows;

x        0       1      2     3      4       5      6

P(x)    0       4      8     12    16     20    24

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A triangle is a three-sided polygon that consists of three sides and three angles. An extension of a side of a triangle is a line segment that is drawn from one of the endpoints of the side that extends beyond the side.

If we extend one side of the triangle and draw a line that passes through one of the adjacent vertices, the resulting shape is called a triangle's exterior angle. This exterior angle is formed by one side of the triangle and the extension of an adjacent side.

In other words, an exterior angle of a triangle is an angle that is formed by one side of a triangle and the extension of an adjacent side of the triangle.

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It is important for Harrison to ensure that his sample is representative of the population he is interested in and that his measures of creativity are reliable and valid. He should also consider potential confounding variables, such as age or gender, that may affect his results.

I would advise Harrison that Pearson's r is a measure of correlation, which examines the linear relationship between two continuous variables. However, it may not be the best statistical test for comparing the creativity scores of people who prefer Star Wars to those who prefer Star Trek, as creativity scores may not necessarily have a linear relationship with preference for either franchise.

Instead, a more appropriate statistical test may be an independent samples t-test or ANOVA, which can compare the means of two or more groups on a continuous variable. These tests are more appropriate when the variable of interest is continuous and the groups being compared are categorical.

Additionally, it is important for Harrison to ensure that his sample is representative of the population he is interested in and that his measures of creativity are reliable and valid. He should also consider potential confounding variables, such as age or gender, that may affect his results.

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In wider confidence intervals greater uncertainty introduced by the fatter tails of the t-distribution.

When finding the confidence interval for the population mean using a sample mean and known population variance.

The appropriate distribution to use is the Standard normal distribution if the sample size is sufficiently large.

However, if the sample size is small (typically less than 30) or if the population variance is unknown, then the Student t distribution should be used instead.

If the Student t-distribution is incorrectly used instead of the Standard normal distribution in this scenario, then the width of the confidence interval will increase.

This is because the Student t distribution has heavier tails than the Standard normal distribution, meaning that there is a greater chance of extreme values occurring.

As a result, the confidence interval based on the Student t distribution will need to be wider to accommodate this increased variability.

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Each person (Tammy, John, Allison, and Henry) paid $11.25 for a movie ticket.

To determine the cost of each movie ticket, we will divide the total amount paid by the number of people who bought tickets.

Total amount paid: $45
Number of people: Tammy, John, Allison, and Henry (4 people)

Step 1: Divide the total amount paid by the number of people.
$45 ÷ 4 = $11.25

So, Allison and each of her friends paid $11.25 for a movie ticket.

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The probability of a child under 18 being allergic to multiple foods is approximately 32%. This means that out of every 100 children with an allergy, we would expect 32 of them to be allergic to more than one food.

To solve this problem, we need to use the information provided in the question. We know that 32% of those with an allergy are allergic to multiple foods. This means that out of every 100 people with an allergy, 32 of them are allergic to more than one food.

If we assume that allergies are equally common in all age groups, then we can use this percentage to estimate the probability of a child under 18 being allergic to multiple foods. However, it is important to note that this assumption may not be entirely accurate, as some allergies are more common in children than in adults.

Assuming that allergies are equally common in all age groups, the probability of a child under 18 being allergic to multiple foods is approximately 32%. This means that out of every 100 children with an allergy, we would expect 32 of them to be allergic to more than one food.

It is important to note that this is just an estimate based on the information provided in the question. In reality, the probability of a child being allergic to multiple foods may be higher or lower depending on a variety of factors such as genetics, environment, and diet.

In order to get a more accurate estimate of the probability of a child being allergic to multiple foods, we would need to collect more data and analyze it using statistical methods. However, based on the information provided in the question, we can conclude that there is a significant likelihood that a child under 18 with an allergy is also allergic to multiple foods.

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Answer:

6

Step-by-step explanation:

total number=24

number of row = 4

now,

number in one row=24/4

=6