The probability distribution for a random variable x is given in the table X: -5,-3,-2,0,2,3 Probability: .17,.13,.33,.16,.11,.10 Find the probability that X <_-3
Answers
Answer:
0.3 probability that [tex]x \leq -3[/tex]
Step-by-step explanation:
The probability distribution is given in the table.
Probability that x <= -3
The values that are -3 or lower are -3 and -5. So
[tex]P(X \leq -3) = P(X = -3) + P(X = -5)[/tex]
From the table:
[tex]P(X = -3) = 0.13, P(X = -5) = 0.17[/tex]. So
[tex]P(X \leq -3) = P(X = -3) + P(X = -5) = 0.13 + 0.17 = 0.3[/tex]
0.3 probability that [tex]x \leq -3[/tex]
Answer:0.3
Step-by-step explanation:
Related Questions
I don’t really understand how to do this
Answers
Answer:
<A = 63degrees
Step-by-step explanation:
From triangle DEF;
<D + <E + <F = 180
87 + 30 + <F = 180
117 + <F = 180
<F = 180 - 117
<F = 63degrees
Since <A = <F based on similarities, then <A = 63degrees
constant
r is the counting number from 7 to 9
Answers
50 points!
What is the area of triangle xyz? Use special right triangles to help find the height. Leave your answer in terms of radical. Show work.
Answers
HELP ON NUMBER 2 PLEASE
Answers
c
step by step explanation
hope this helps
Answer:
its C
Step-by-step explanation:
if u need some explanation just ask
Kyle works at a donut factory, where a 10-oz cup of coffee costs 95¢, a 14-oz cup costs $1.15, and a 20-oz cup costs $1.50. During one busy period, Kyle served 21 cups of coffee, using 294 ounces of coffee, while collecting a total of $24.35. How many cups of each size did Kyle fill?
Kyle filled ___ 10-oz cup(s), ___ 14-oz cup(s), and ___ 20-oz cup(s).
Answers
Kyle filled 6 10-oz cup(s), 11 14-oz cup(s), and 4 20-oz cup(s).
Let's define the variables:
x = number of 10-oz cups of coffee sold.
y = number of 14-oz cups of coffee sold.
z = number of 20-oz cups of coffee sold.
We know that:
Kyle served 21 cups of coffee, then:
x + y + z = 21
He used 294 ounces of coffee, then:
x*10 oz + y*14 oz + z*20 oz = 294 oz
He collected a total of $24.35, then:
x*($0.95) + y*($1.15) + z*($1.50) = $24.35
Then we have a system of 3 equations:
x + y + z = 21
x*10 oz + y*14 oz + z*20 oz = 294 oz
x*($0.95) + y*($1.15) + z*($1.50) = $24.35
To solve this, the first thing we need to do is isolate one of the variables in one of the equations, let's isolate x in the first one.
x = 21 - y - z
Now we can replace this in the other two equations to get:
(21 - y - z)*10 oz + y*14 oz + z*20 oz = 294 oz
(21 - y - z)*($0.95) + y*($1.15) + z*($1.50) = $24.35
Now we can simplify these two equations:
y*4 oz + z*10 oz = 294 oz - 210oz = 84 oz
y*($0.20) + z*($0.55) = $24.35 - $19.94 = $4.40
Now we need to do the same thing, we need to isolate one of the variables in one of the equations, we can isolate z in the first one:
z*10 oz = 84oz - y*4 oz
z = (84oz - y*4 oz)/10oz
z = 8.4 - y*0.4
Now we can replace this in the other equation:
y*($0.20) + ( 8.4 - y*0.4)*($0.55) = $4.40
Now we can solve this for y.
y*($0.20) + $4.62 - y*$0.22 = $4.40
y*$0.02 = $4.40 - $4.62 = $0.22
y = $0.22/$0.02 = 11
Now that we know the value of y, we can use:
z = 8.4 - y*0.4
z = 8.4 - 11*0.4 = 4
Now that we know the value of z and y we can use:
x = 21 - y - z
x = 21 - 11 - 4 = 6
Then we found:
x = 6
y = 11
z = 4
this means that:
Kyle filled 6 10-oz cup(s), 11 14-oz cup(s), and 4 20-oz cup(s).
If you want to learn more about systems of equations, you can read:
https://brainly.com/question/20067450
Suppose one network executive is selected at random. find the indicated probabilities
Answers
Answer:
na answer ran nyo na po
Step-by-step explanation:
Suppose the probability of success in a binomial experiment is 0.95. What is the probability of failure?
Answers
Answer:
0.05
Step-by-step explanation:
this is because the total probability always adds up to 1
Which statement best describes the area of Triangle ABC shown below? A triangle ABC is shown on a grid. The vertex A is on ordered pair 4 and 4, vertex B is on ordered pair 7 and 2, and the vertex C is on ordered pair 1 and 2. (5 points) It is one-half the area of a square of side length 6 units. It is twice the area of a square of side length 6 units. It is one-half the area of a rectangle with sides 6 units × 2 units. It is twice the area of a rectangle with sides 6 units × width 2 units.
Answers
Answer:
It is one-half the area of a rectangle with sides 6 units × 2 units
Step-by-step explanation:
area of the triangle is 6
base = 6
height = 2
so are is 6 x 2 / 2
Answer:did this a few months ago this answer is
It is one-half the area of a rectangle with sides 6 units × 2 units.
Step-by-step explanation:
like the person up there
Fill in the y values of the t–table for the function y = RootIndex 3 StartRoot x EndRoot
x y
−8
−1
0
1
8
Answers
Answer:
the answer will - 16
Step-by-step explanation:
because 8 minus 1 is 7 and plus 0 is also 7 then you have add 1 means you have to plus 1 and then their will be 8 and then plus another 8 and the answer will be minus 16
The y values of the table for the function will be -2, -1, 0, 1, and 2.
How to depict the values?The given function is y = 3✓x. Therefore, for x = -8, y = 3✓-8 = -2. For x = -2, y will be = 3✓-1 = -1.
For x = 0, y = 3✓0 = 0. When x = 1, y = 3✓1 = 1 and lastly when x = 8, y = 3✓8 = 2.
In conclusion, the y values of the table for the function will be -2, -1, 0, 1, and 2.
Learn more about t tables on:
https://brainly.com/question/12488423
Peter Piper picked a pickled pepper out of a pepper jar. If the probability of drawing a pickled pepper was 2/5,
how many total peppers could be in the jar (psst. you can't have a half of a pepper)?
Answers
Answer:
5
Step-by-step explanation:
2/5 pickled peppers means that there are 2 pickled peppers out of 5 total peppers.
v
=
√
20
L
v
=
20
L
to estimate the speed of a car,
v
v
, in miles per hour, based on the length,
L
L
, in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car's skid marks to be 168 feet long. Approximately how fast was the car traveling? Round your answer to the nearest tenth (one decimal place) of a unit.
Answers
Answer:
sorry no idea hhcchuucghhf
The price for digital downloads of music is represented by the linear function f(x) shown on the graph. The price for digital downloads of movies is represented by g(x) = x, where x is the number of movies downloaded and g(x) is the total cost in dollars.
You want to make 2 downloads, and you have $5. Determine the least expensive option.
1. You download 2 songs.
2. You download 2 movies.
3. You download 1 song and 1 movie.
4. You don't have enough money for 2 downloads.
Answers
Answer:
The second answer is the correct one
Step-by-step explanation:
system of equations amanda bought 9 shirts for a total of 69$ Tee shirts cost 7$ and long sleeve shirts cost 8$ how many of each type did she buy
Answers
9514 1404 393
Answer:
6 shirts at $83 shirts at $7Step-by-step explanation:
Let x and y represent the numbers of $8 and $7 shirts, respectively. Your system of equations can be written ...
x + y = 9
8x +7y = 69
Subtracting 7 times the first equation from the second gives ...
(8x +7y) -7(x +y) = (69) -7(9)
x = 6
Then y is ...
y = 9 -x = 9 -6 = 3
Amanda bought 6 tees costing $8 and 3 tees costing $7.
Consider the following sets of sample data:
A: 20,347, 20,327, 22,117, 21,762, 20,864, 20,102, 21,684, 20,063, 21,728, 21,580, 21,720, 20,920, 21,442, 20,766
B: 3.38, 4.64, 4.09, 3.93, 4.25, 4.63, 4.78, 4.25, 4.46, 2.93, 3.64
Required:
For each of the above sets of sample data, calculate the coefficient of variation, CV.
Answers
Answer:
3.319%
14.13%
Step-by-step explanation:
A: 20347, 20327, 22117, 21762, 20864, 20102, 21684, 20063, 21728, 21580, 21720, 20920, 21442, 20766
B: 3.38, 4.64, 4.09, 3.93, 4.25, 4.63, 4.78, 4.25, 4.46, 2.93, 3.64
Given the data:
The mean, m = Σx / n
The standard deviation, s = √Σ(x - m)²/ (n-1))
The coefficient of variation is, CV = s / mean
Using calculator to save computation time :
A: 20,347, 20,327, 22,117, 21,762, 20,864, 20,102, 21,684, 20,063, 21,728, 21,580, 21,720, 20,920, 21,442, 20,766
Data A :
Mean, m = 21101.5714
Standard deviation, s = 700.28925
CV = s / m * 100% = 700.28925 / 21101.5714 * 100% = 3.319%
Data B:
Mean = 4.089
Standard deviation, s = 0.5776
CV = 0.5776 / 4.089 * 100% = 14.13%
A rectangular. Garden bed measures 8 x 6 feet a water faucet is at one corner of the bed hose must be long enough to reach opposite corner when stretched straight. Find required length of hose
Answers
Answer:
10 ft
Step-by-step explanation:
The word problem is basically asking the length of one corner of the rectangle to the other. We can split the rectangle up into two right triangles and we will use the Pythagorean theorem to find the hypotenuse or the length from one corner to another. A^2 + B^2 = C^2 A and B are the lengths of the rectangle, 8 and 6. 8^2 + 6^2 = C^2
8^2 = 64 and 6^2 = 36
64 + 36 = 100.
the square root of 100 is 10 so the length of the hose is `10.
Two circles with the same center are called
Select one:
a. externally tangent
b. circumscribed
c. inscribed
d. concentric
Answers
Answer:
d
Step-by-step explanation:
Circles with the same centre are concentric circles
Answer:
concentric
Step-by-step explanation:
as well all know that two circles with the same center are called Concentric and there is no doubt about that
The length of a rectangle is eight more than double the width. If the perimeter is 130 inches, find the
dimensions.
Answers
Answer:
The length is 46 inches and the width is 19 inches
Step-by-step explanation:
Let w represent the width.
The length of the rectangle can be represented by 2w + 8, since it is eight more than double the width.
Use the perimeter formula, p = 2l + 2w. Plug in 130 as the perimeter and 2w + 8 as l, then solve for w:
p = 2l + 2w
130 = 2(2w + 8) + 2w
130 = 4w + 16 + 2w
130 = 6w + 16
114 = 6w
19 = w
So, the width is 19 inches. Plug in 19 as w into 2w + 8 to find the length:
2w + 8
2(19) + 8
38 + 8
= 46
The length is 46 inches and the width is 19 inches
WILL GIVE BRAINLIEST IF CORRECT
Answers
Answer:
The second answer.
Step-by-step explanation:
Tim is correct. Absolute value is just the distance away from 0. In this case, both P and Q are 3/8 away from zero, even though they have opposite signs. In fact, opposites signs of the same number will always have the same absolute value because they are the same distance from 0.
So, it is the second one.
Hope this helps!
Answer:
2nd answer choice:
Tim, because each point is 3/8 unit away from 0
Step-by-step explanation:
The absolute value of a number is how far it is from 0 in the number line, not including direction.
On this number line, point P is -3/8 and point Q is 3/8.
In the number line, count how many units each point is away from 0. You will find that they each have a distance of 3/8 from the number line. Therefore they have the same absolute values.
PS: absolute values are NEVER negative.
Hope this helps!
Right angle Trigonometry, please help me solve (find the angle ) and explain!
Answers
Answer:
<A = 41.41
Step-by-step explanation:
You want angle A. Call it theta.
AC is the adjacent side. It is the side that is NOT the Hypotenuse.
The Hypotenuses is the longest side in a right triangle.
Cos-1 (Adjacent Side / Hypotenuse ) = theta
Adjacent side = 6
Hypotenuse = 8
Cos-1(6 / 8) = theta
theta = Cos-1(0.75)
theta = 41.41 rounded.
A box with a square base and open top must have a volume of 256000 c m 3 . We wish to find the dimensions of the box that minimize the amount of material used. First, find a formula for the surface area of the box in terms of only x , the length of one side of the square base.
Answers
Answer:
Follows are the response to the given question:
Step-by-step explanation:
The volume of the box:
[tex]V = x\times x \times h = 256000 \ cm^3\\\\\to x^2 \times h = 256000\\\\\to h = \frac{256000}{x^2}[/tex]
The surface area of the open box is:
[tex]A(x) = x \times x + 2 \times (x \times h +x \times h)\\\\A(x) = x^2 + 4 \times x \times h\\\\A(x) = x^2 + \frac{1024000}{x}\\\\\frac{d(x^n)}{dx} = n \times x^{(n - 1)}\\\\[/tex]
Use above formula
[tex]A'(x) = 2 \times x - \frac{1024000}{x^2}\\\\[/tex]
[tex]A'(x) = 0\\\\2\times x - \frac{1024000}{x^2} = 0\\\\2x = \frac{1024000}{x^2}\\\\x^3 = 512000\\\\x = (512000)^{(\frac{1}{3})} = 80\ cm\\\\[/tex]
Now
[tex]A''(x) = 2\times 1 + 2\times \frac{1024000}{x^3}\\\\A''(x) = 2 + \frac{2048000}{x^3}\\\\x = 80 \ cm\\\\A''(80) = 2 + \frac{2048000}{80^3} = 6\\\\[/tex]
therefore [tex]A"(x) > 0,[/tex] x amount of material used in minimum.
[tex]h = \frac{256000}{80^2} = 40\ cm[/tex]
given f(x)=8x+13 and g(x)=x^2-5x, find (f-g)x
Answers
(f-g)x= -x²+13x+13
Hope it helps you....
10) y=p+ar
Find y when p=-5,q=3 and r=-7.
y
Write p in terms of q, r and y.
Answers
Y=p+ar
Y=-5+(3x-7)
Y=-5+(-21)
Y=-26
Sam is collecting pennies. On the first day of the month, Sam is given 11 pennies. Each day after that he gets 7 more pennies. Which of the following equations defines how many pennies he has after the nth day?
Answers
Answer:
he would have 74 pennies i think
Step-by-step explanation:
he already has 11 pennies on the first day and each day after he gets 7 more. so putting that into a equation,specifically y=mx+b, the equation would be y=7x+11. since there are 9 days after that,9 would replace the x value. so you would plug 9 in making the new equation y=7×9+11. all u do now is solve, 7×9 is 63,then plus 11 is 74
PLEASE HELP ME !!!!
At a real estate agency, an agent sold a house for $358,000. The commission rate is
4.5% for the real estate agency and the commission rate for the agent is20 % of the amount the real estate agency gets. How much did the agency make on the house? How much did the agent earn in commission?
The agency made $___ on the house.
Answers
Answer:
The agency makes 16110
The agent makes 3222
Step-by-step explanation:
First find the real estate commission
358000 * 4.5%
358000*.045
16110
The agent gets 20 percent of that amount
16110*20%
16110*.2
3222
Tell whether the shape appears to have zero lines, 1 line, or more than 1 line of symmetry. Select zero, 1, or more than 1. There is/are ? line(s) of symmetry.
Answers
Answer:
This Symbol has 4 lines of Symmetry
Three brothers wunmi, niyi and dare shared a quantity of walnuts in the ratio 3:4:5 if wunmi got 21 walnuts how many did niyi get?
.
Answers
Answer:
28 walnuts
Step-by-step explanation:
3 times 7 is 21 so 4 times 7 is how many walnuts niyi gets
xác định m để 3 vector sau đây phụ thuộc tuyến tính
u=(m+1,1,m+1),v=(1,1,1),u(2,0,m+2
0
Answers
Answer:
i dont know hahaha
Step-by-step explanation:
soryy
Find the slope of a line that is PRRPENDICULAR to the line that goes between (3,-8) and (5,2).
5
1/5
-5
-1/5
3
-3
1/3
-1/3
Answers
Answer:
-1/5
Step-by-step explanation:
Slope of the line = (y2-y1)/(x2-x1)
(2-(-8)/(5-3)
10/2 = 5
Perpendicular line = the slope is opposite of the reciprocal
-1/5
(8+2)-5=???????????????????
Answers
The absolute value of -7
Answers
Answer:
7
Step-by-step explanation:
|-7| means find the distance from 0
We take the non negative value
|-7| = 7