Pollsters are concerned about declining levels of cooperation among persons contacted in surveys. A pollster contacts 88 people in the 18-21 age bracket and finds that 75 of them respond and 13 refuse to respond. When 286 people in the 22-29 age bracket are contacted, 260 respond and 26 refuse to respond. Assume that 1 of the 374 people is randomly selected. Find the probability of getting someone in the 18-21 age bracket or someone who refused to respond.

The probability of the number of people who say auto racing is their favorite sport being more than 37 can be calculated using statistical methods.

This would require information on the total number of people surveyed, the number of people who said auto racing is their favorite sport, and other relevant data.

Depending on the specific scenario, the probability could be estimated or calculated exactly.

However, without this information, it is not possible to provide a specific answer to the question.

Therefore, it is important to have all relevant information and data before calculating probabilities or making any conclusions about the likelihood of an event occurring.

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We label the fractions on the number line as 3 1/5 and 4 7/10. To find the distance between the two fractions, we subtract 16/5 from 47/10, which equals 9/10. Therefore, the distance between 3.2 and 4.7 is 0.9.

To solve decimal and fraction problems on a number line where the first number is a whole number and the other two numbers are decimal numbers, follow these steps:

1. Draw a number line and label the whole number as the starting point.
2. Convert the decimals to fractions, if needed.
3. Place the fractions on the number line, starting from the whole number and moving to the right.
4. If the decimal is less than 0.5, place the fraction closer to the whole number. If the decimal is greater than 0.5, place the fraction closer to the next whole number.
5. Label the fractions on the number line.
6. To find the distance between the two fractions, subtract the smaller fraction from the larger fraction.
7. If needed, convert the resulting fraction to a decimal.

For example, let's say we want to plot 3.2 and 4.7 on a number line starting from 2. We convert the decimals to fractions: 3.2 is 16/5 and 4.7 is 47/10. We place 16/5 closer to 3 and 47/10 closer to 5. We label the fractions on the number line as 3 1/5 and 4 7/10. To find the distance between the two fractions, we subtract 16/5 from 47/10, which equals 9/10. Therefore, the distance between 3.2 and 4.7 is 0.9.

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db/dt = 40/12 = 10/3 Feet per second, or approximately 3.33 feet per second. So the foot of the ladder is being pulled away from the wall at a rate of about 3.33 feet per second when it is 8 feet away from the wall and the top of the ladder is sliding down at 4 feet per second.

We can use the Pythagorean theorem to relate the length of the ladder, the distance of its foot from the wall, and the height it reaches on the wall:

[tex]a^2 + b^2 = c^2[/tex]

where c is the length of the ladder, a is the distance of its foot from the wall, and b is the height it reaches on the wall. Differentiating with respect to time, we get:

2a da/dt + 2b db/dt = 2c dc/dt

We are interested in finding db/dt when a = 8 feet and dc/dt = -4 feet per second (negative because the top of the ladder is sliding down). We also know that c = 10 feet, so we can plug in these values and solve for db/dt:

2(8) da/dt + 2b db/dt = 2(10) (-4)

Simplifying:

16 da/dt + b db/dt = -40

We also know that when a = 8 feet and b = 6 feet (from the Pythagorean theorem), the ladder is at a height of 6 feet on the wall. Therefore, we can plug in these values and solve for da/dt:

8 da/dt + 6 db/dt = 0

Simplifying:

da/dt = -(3/4) db/dt

Now we can substitute this expression for da/dt in the first equation, and solve for db/dt:

2(8) (-(3/4) db/dt) + 2(6) db/dt = -40

Simplifying:

-12 db/dt = -40

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There are 832 different three-course meals that can be ordered at the I Love Food restaurant.

Since there are 13 appetizers to choose from, 16 entrees, and 4 desserts, the number of possible three-course meals is:

13 x 16 x 4 = 832

A food restaurant is a business establishment that specializes in preparing and serving food to customers. These restaurants may offer a variety of cuisines, from traditional and regional dishes to fusion and international flavors. They are typically divided into different categories based on their menus and service styles, such as fast food, casual dining, fine dining, or ethnic restaurants.

Food restaurants are designed to provide a comfortable and enjoyable dining experience for customers, often with attractive decor, seating arrangements, and music. They employ chefs, cooks, servers, and other staff who work together to prepare and serve high-quality food and drinks. Many food restaurants offer takeout or delivery services, allowing customers to enjoy their meals at home or on the go. Some restaurants also provide catering services for events, parties, and other special occasions.

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maybe this is a answer!!!

Simple Interest = (Principal * Rate * Time) / 100

Principal = Sum borrowed

Rate = 12% p.a.

Time = 2 years

Simple Interest = Rs.1920

we get:

1920 = (Principal * 12 * 2) / 100

Simplifying this equation, we get:

1920 * 100 = Principal * 12 * 2

192000 = Principal * 24

Principal = 192000 / 24

Principal = 8000

Therefore, Mrs. Joshi borrowed Rs.8000 from the bank.

To calculate the probability that the resulting product is even, we need to first determine the total number of possible outcomes. There are 90 two-digit numbers ranging from 10 to 99. If we choose two different numbers, there are a total of 90C2 (90 choose 2) possible combinations, which is equal to 4,005.

To calculate the number of even products, we need to consider the different scenarios. If one of the numbers is even, the product will also be even. There are 45 even numbers in the range from 10 to 99, so the number of even products that can be formed from an even number and an odd number is 45 x 45 = 2025.

If both numbers are odd, then the product will also be odd, and hence not even. There are 45 odd numbers in the range from 10 to 99, so the number of odd products that can be formed from an odd number and an odd number is 45 x 44 = 1980.

Therefore, the total number of even products that can be formed is 2025. The probability that the resulting product is even is then 2025/4005, which simplifies to 9/17, or approximately 0.5294. So, there is a 52.94% chance that the resulting product will be even.

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Answer:

the awnser to the question is: 40°

The mapping diagram does not represent a function, since the element 9 in set A is mapped to two different elements in Set B.

A relation represents a function if each value of the input is mapped to only one value of the output, that is, one input cannot be mapped to multiple outputs.

From the mapping diagram, we have that the element 9 in Set A is mapped to two different elements of set B, that is, an input is mapped to multiple outputs, hence the mapping diagram does not represent a function.

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The expected loss without the generator ($495,000) is less than the cost of installing the generator ($800,000), it would not be economically justifiable for the bank to install the new power generator based on this decision tree analysis.

The management of First American Bank faces a decision regarding the installation of an emergency power generator to mitigate potential losses from physical catastrophes such as power failures or fires.

To evaluate this decision, we can use decision tree analysis.

Without the generator, there is a 10% chance of a power outage. In the event of an outage, there is a 0.05 probability of very large losses ($80 million) and a 0.95 probability of slight losses ($1 million). To calculate the expected loss from not installing the generator, we can use the following formula:

Expected loss = (probability of outage) x [(probability of large loss x large loss amount) + (probability of slight loss x slight loss amount)]

Expected loss = 0.1 x [(0.05 x $80 million) + (0.95 x $1 million)]
Expected loss = 0.1 x [$4 million + $950,000]
Expected loss = 0.1 x $4.95 million
Expected loss = $495,000

Now let's compare this expected loss to the cost of installing the emergency power generator, which is $800,000. Since the expected loss without the generator ($495,000) is less than the cost of installing the generator ($800,000), it would not be economically justifiable for the bank to install the new power generator based on this decision tree analysis.

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Answer:

see explanation

Step-by-step explanation:

the equation of a line in gradient- intercept form is

y = mx + c ( m is the gradient and c the y- intercept )

given

2x - 3y = 5 ( subtract 2x from both sides )

- 3y = - 2x + 5 ( divide through by - 3 )

y = [tex]\frac{2}{3}[/tex] x - [tex]\frac{5}{3}[/tex] ← in gradient- intercept form

with gradient m = [tex]\frac{2}{3}[/tex]

(a) The standard deviation of the required distribution for vitamin C is approximately 7.98 mg/d.
(B) The plot should show a bell-shaped curve centered at 60 mg/d, with the RDA located slightly to the right of the center.

(a) To determine the standard deviation of the required distribution for vitamin C, we can use the information provided about the estimated average requirement (EAR) and the recommended dietary allowance (RDA). The EAR is the mean of the distribution (60 mg/d), and the RDA (75 mg/d) is assumed to be the 97.72 percentile.

We can use the Z-score formula to find the standard deviation:

Z = (X - μ) / σ

Where Z is the Z-score, X is the value of the RDA, μ is the mean (EAR), and σ is the standard deviation.

First, find the Z-score corresponding to the 97.72 percentile. Using a standard normal table or calculator, we find that Z ≈ 2.0.

Now, plug in the values into the Z-score formula:

2.0 = (75 - 60) / σ
σ = (75 - 60) / 2.0
σ = 15 / 2.0
σ = 7.5 mg/d
Plugging in the values, we get:
1.88 = (75 - 60) / σ

Solving for σ, we get:
σ = (75 - 60) / 1.88 = 7.98

The standard deviation of the required distribution is 7.5 mg/d.

(b) To sketch the distribution of vitamin C requirements for 19- to 30-year-old women, follow these steps:

1. Draw a normal distribution curve.
2. Mark the mean (EAR) at 60 mg/d on the horizontal axis.
3. Mark the RDA at 75 mg/d and the UL at 2000 mg/d on the horizontal axis.
4. Indicate that the standard deviation is 7.5 mg/d.

The distribution of vitamin C requirements for 19- to 30-year-old women is Normal, with a mean of 60 mg/d and a standard deviation of 7.98 mg/d. The EAR, RDA, and UL can be marked on the plot as follows:

- EAR: 60 mg/d, located at the center of the distribution
- RDA: 75 mg/d, located at the 97.72 percentile of the distribution
- UL: 2000 mg/d, located at the far right end of the distribution (beyond the range of the plot)

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Answer:

3, 6, 9, 12, 15, 18, 21, 24, 27, 30.

Step-by-step explanation:

Solutions. The first ten multiples of 3 are listed below: 3, 6, 9, 12, 15, 18, 21, 24, 27, 30.

The orthonormal basis for V is: {v1 = 1/√(2), v2 = (t - √(2)/2)/√(2), v3 = (√(3)/2)t^2 - (√(6)/2)t}. To produce an orthonormal basis for V, we need to find a set of vectors that are linearly independent and can span the space V. Since we are working with polynomials of degree less than 2, we can write them in the form:

p(t) = at^2 + bt + c

where a, b, and c are real coefficients.

To find the basis, we can start with the standard basis for V, which is {1, t, t^2}. We can then use the Gram-Schmidt process to produce an orthonormal basis.

Here are the steps:

1. Normalize the first vector in the basis, which is 1, to obtain:

v1 = 1/√(2)

2. Calculate the projection of t onto v1 and subtract it from t to obtain the second vector in the basis:

v2 = (t - (t, v1)v1)/∥(t - (t, v1)v1)∥

where (t, v1) is the inner product of t and v1.

Simplifying, we get:

v2 = (t - √(2)/2)/√(2)

3. Finally, calculate the projection of t^2 onto v1 and v2, and subtract these projections from t^2 to obtain the third vector in the basis:

v3 = (t^2 - (t^2, v1)v1 - (t^2, v2)v2)/∥(t^2 - (t^2, v1)v1 - (t^2, v2)v2)∥

where (t^2, v1) and (t^2, v2) are the inner products of t^2 with v1 and v2, respectively.

Simplifying, we get:

v3 = (√(3)/2)t^2 - (√(6)/2)t

Therefore, the orthonormal basis for V is:

{v1 = 1/√(2), v2 = (t - √(2)/2)/√(2), v3 = (√(3)/2)t^2 - (√(6)/2)t}

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The probability is approximately 0.0121, or 1.21%.

We can approach this problem using combinatorics.

First, we need to count the number of ways to choose two cards from a standard 52-card deck. This is given by the formula:

C(52, 2) = (52 choose 2) = 1,326

Next, we need to count the number of ways to choose two number cards totaling to 12. There are four ways to get a total of 12:

6 and 6

5 and 7

7 and 5

4 and 8

For each of these combinations, there are four suits to choose from, so there are a total of 4 x 4 = 16 ways to choose two number cards totaling to 12.

Therefore, the probability of choosing two number cards totaling to 12 is:

16/1326

Simplifying the fraction:

4/331

So the probability is approximately 0.0121, or 1.21%.

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Answer:

20 tins

Step-by-step explanation:

Since EACH dog eats 3/5 of a tin each day, that means that 3/5 + 3/5 or 6/5 of a tin is eaten everyday. Now that we know the daily amount, multiply it by 16 to find the number of tins for 16 days:

16* 6/5 = 19.2. Since we have to find the number of least entire tins, we round up to 20 tins.

Answer:

D

Step-by-step explanation:

93.6/2/7.8=6

The sum of the convergent geometric series is 5/4, or 1.25. The given infinite geometric series is 1, 1/5, 1/25, 1/125, ...

To determine if this series is convergent or divergent, we need to examine the common ratio (r) between each term. The common ratio can be calculated by dividing a term by its previous term. For example, (1/5) / 1 = 1/5, (1/25) / (1/5) = 1/5, and so on. Thus, the common ratio (r) is 1/5.

A geometric series converges if the absolute value of its common ratio is less than 1 (i.e., |r| < 1). In this case, since |1/5| < 1, the series is convergent.

To find the sum of the convergent geometric series, we use the formula:

S = a / (1 - r)

where S is the sum of the series, a is the first term, and r is the common ratio.

Here, a = 1 and r = 1/5. Plugging these values into the formula, we get:

S = 1 / (1 - (1/5))

S = 1 / (4/5)

S = 5/4

Thus, the sum of the convergent geometric series is 5/4, or 1.25.

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The probability that Lola pulled a red marble first and a yellow marble second is 0.134 or approximately 13.4%.

To calculate the probability that Lola pulls a red marble first and a yellow marble second, we can use the formula:

P(Red, Yellow) = P(Red) x P(Yellow|Red)

where P(Red) is the probability of pulling a red marble first, and P(Yellow|Red) is the conditional probability of pulling a yellow marble second given that a red marble was pulled first.

First, we can calculate P(Red):

P(Red) = number of red marbles / total number of marbles

P(Red) = 4 / (4 + 4 + 12)

P(Red) = 4 / 20

P(Red) = 0.2

So the probability of pulling a red marble first is 0.2.

Next, we can calculate P(Yellow|Red):

P(Yellow|Red) = number of yellow marbles remaining / total number of remaining marbles

P(Yellow|Red) = 12 / (4 + 3 + 11)

P(Yellow|Red) = 12 / 18

P(Yellow|Red) = 0.67

So the probability of pulling a yellow marble second given that a red marble was pulled first is 0.67

Now we can use the formula:

P(Red, Yellow) = P(Red) x P(Yellow|Red)

P(Red, Yellow) = 0.2 x 0.67

P(Red, Yellow) = 0.134

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Answer: Option B ($1200 at 8% compound interest per annum for 2 years) is a better investment.

Step-by-step explanation:

In option A, the interest is calculated on the principal amount only, which is known as simple interest.

Simple Interest Formula:

Simple Interest = (P × R × T) / 100

Where P is the principal amount, R is the rate of interest and T is the time period.

So, for option A:

P = $1200

R = 9%

T = 2 years

Simple Interest = (1200 × 9 × 2) / 100 = $216

Total Amount = Principal + Simple Interest = $1200 + $216 = $1416

In option B, the interest is calculated on the principal amount as well as the interest earned in previous years, which is known as compound interest.

Compound Interest Formula:

Total Amount = P (1 + R/100) ^n

Where P is the principal amount, R is the rate of interest and n is the number of years.

So, for option B:

P = $1200

R = 8%

n = 2 years

Total Amount = 1200 (1 + 8/100) ^2 = $1369.86

As we can see, option B yields a higher total amount compared to option A, so it is a better investment choice.

Answer:

a) Her reasoning is wrong because √50 does not simplify to 2√25, it simplifies to 5√2. With her thinking that √50 simplifies to 2√25, then this leads to her doing 2 * 5 which equals 10.

b) To estimate a square root, you have to find two square numbers that make the number lie in between the two squares. In this case we need to find two square numbers where one square number is smaller than 50 and the other one is bigger. You should have found the two square numbers to be 7 and 8 because 7² = 49 and 8² = 64. Now we divide 50 by either number, either 7 or 8. As we can't use a calculator it is easier to divide 50 by 8 than 7. 50/8 = 6.25 Now we find the average of 6.25 and 8 which is 14.25/2 = 7.125 7.125 rounded to the nearest tenth is 7.1 Therefore the answer for b is 7.1

Answer:

(a) √50 is not equal to 10.

√50 = √25√2 = 5√2

(b) √50 = 5√2 = 5(1.41) = 7.05 = 7.1

The closest that the family will come to the waterfall while on the road is 5.6 miles.

To solve this problem, we can use the law of cosines. Let x be the distance that the family travels from the point where the bearing is S71E to the point where the bearing is S35E, and let d be the distance from the family's starting point to the waterfall.
We have:
cos(71) = d/x
cos(35) = d/(x+8)
Multiplying both sides of the first equation by x and both sides of the second equation by (x+8), we get:
d = x cos(71)
d = (x+8) cos(35)
Setting the right-hand sides of these equations equal to each other and solving for x, we get:
x cos(71) = (x+8) cos(35)
x = 8 cos(35)/(cos(71)-cos(35))
Plugging this into the first equation above, we get:
d = x cos(71) = 8 cos(35) cos(71)/(cos(71)-cos(35))
This gives us the distance from the family's starting point to the waterfall. To find the closest distance that the family will come to the waterfall while on the road, we need to subtract the radius of the waterfall from this distance. Let's assume that the radius of the waterfall is 50 feet.
The closest distance that the family will come to the waterfall while on the road is:
d - 50 = 8 cos(35) cos(71)/(cos(71)-cos(35)) - 50
This is approximately equal to 5.6 miles. Therefore, the closest that the family will come to the waterfall while on the road is 5.6 miles.

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The correct matching of positive and negative number according to the situation is given by,

An increase in altitude of 6 miles.→ +6

6 degrees below zero.→-6

Taking 12 steps back.→-12

Going up 12 stairs.→+12

Depositing $2,000 →+2000

A withdrawal of $2,000→ -2000.

The left hand side statement representing the situation of right hand side are as follow,

An increase in altitude of 6 miles represents the positive value of 6 as it increases.

+ 6.

6 degrees below zero represents the negative value of 6 as below zero numbers are negative.

-6.

Taking 12 steps back represents the negative value of 12 as moving back is negative direction.

-12.

Going up 12 stairs represents the positive value of 12 as moving up is always positive.

+12.

Depositing $2,000 represents the positive value of 2000 as it increases the amount.

+2000

A withdrawal of $2,000 represents the negative value of 2000 as it decreases the amount.

-2000.

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From the given data which shows the length of fish in a pond, there is an outlier at 7.

Hence, the correct option is B.

To determine if the data contains any outliers, we can use the interquartile range (IQR) method. First, we need to find the median and the quartiles of the data set

Arrange the data in order 7, 9, 11, 13, 15, 15, 19, 28.

Median (Q2) = the middle value = 15.

Q1 (the first quartile) = the median of the lower half of the data set = 9.

Q3 (the third quartile) = the median of the upper half of the data set = 19.

Next, we can calculate the IQR as the difference between the third and first quartiles

IQR = Q3 - Q1 = 19 - 9 = 10.

Finally, we can identify any outliers as values that are more than 1.5 times the IQR above the third quartile or below the first quartile.

The upper outlier bound is Q3 + 1.5 x IQR = 19 + 1.5 x 10 = 34.

The lower outlier bound is Q1 - 1.5 x IQR = 9 - 1.5 x 10 = -6.

Since the minimum value in the data set is 7, which is greater than the lower outlier bound, we have an outlier at 7. The maximum value in the data set is 28, which is less than the upper outlier bound, so it is not an outlier.

Hence, the correct option is B.

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Answer:5

Step-by-step explanation: The probability of getting one true or false question correct is 1/2. 10*1/2=5

The distribution of the sample mean can be represented as: X ~ N(67.15, 3.084/√30)

The distribution of the sample mean is a normal distribution with a mean equal to the population mean µ and a standard deviation equal to the population standard deviation σ divided by the square root of the sample size n.

Therefore, for this problem, the distribution of the sample mean can be represented as:

X ~ N(67.15, 3.084/√30)

where X is the sample mean, N represents a normal distribution, 67.15 is the population mean, 3.084 is the population standard deviation, and √30 is the square root of the sample size.

This distribution assumes that the sample is randomly selected from the population and the sample size is large enough to satisfy the central limit theorem.

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When long radishes (SLSL) are crossed to oval radishes (SLSR), the F1 generation will all have the genotype SLSR because they inherit one allele for long shape from one parent and one allele for oval shape from the other parent. When the F1 generation is allowed to cross at random among themselves, the expected phenotypic ratio in the F2 generation will be 1:2:1 for long:round: oval.

This is because each F1 individual can produce gametes with either the S allele or the L allele, and the S allele is dominant over the L allele for determining shape.

So, when two F1 individuals with the SLSR genotype cross, there are four possible offspring genotypes: SSLR (long), SLSR (long), SRSR (round), and SLSL (oval). The probability of each genotype is 1/4. However, since the S allele is dominant over the L allele, both the SSLR and SLSR genotypes will express the long-shape phenotype. Thus, the phenotypic ratio in the F2 generation will be 1 long: 2 round: 1 oval.

In summary, when long radishes are crossed to oval radishes and the F1 generation is allowed to cross at random among themselves, the expected phenotypic ratio in the F2 generation will be 1 long : 2 round : 1 oval.

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Dr. Tremble's study is an example of quantitative research. This type of research involves the use of numerical data and statistical analysis to draw conclusions about a population.

In Dr. Tremble's study, he used surveys to collect data on the perceptions of faculty harassment from a sample of 57 colleges. By randomly selecting these colleges, he aimed to obtain a representative sample of the population of all colleges in the United States.

Quantitative research is useful for testing hypotheses and identifying patterns or trends in large sets of data. In Dr. Tremble's study, he can use statistical techniques to analyze the survey results and draw conclusions about the prevalence and nature of faculty harassment in colleges. He can also use the data to identify any patterns or trends in the types of colleges or faculty members that experience harassment.

Overall, quantitative research allows researchers like Dr. Tremble to draw generalizable conclusions about a population based on a sample. This makes it a valuable tool for studying large groups and identifying patterns that may not be apparent from individual cases or small-scale studies.

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Answer:

Pam

Step-by-step explanation:

Standard form equation of a circle

(x-h)^2 + (y-k)^2 = r^2        h.k is the center = 3,-2   and r = 2

so the equation is

 (x-3)^2  + (y+2)^2 = 2^2 = 4