The Grades Of A Science Test Are Normally Distributed. Thanh Finds That His Grade On The Test Has A Z-score (2024)

Answer:

14130= I rounded

Step-by-step explanation:

This is the formula

4/3 x pi x r cubed

radius :15

pi = 3.14

substitue the Values

4/3 times 3.14 times 15 times 15 times 15.

3375 = 15 times 15 times 15

3375 x 3.14 = 10597.5 x 4/3

14130

Answer:

14,137.1669 ft^3

Step-by-step explanation:

1. Cube the radius: 15^3 = 3375

2. Multiply the cubed radius by 4/3: 3375*4/3 = 4500

3. Multiply the equation by 3.14159 (pi): 4/3(3.14159)(3375) = 14,137.1669 ft^3

4. Round your answer as needed.

Answer: Trapezoid

Step-by-step explanation:

Trapezoids are parollelograms, that’s all

Answer:

B Center: (-4, 8) Radius = 4

Step-by-step explanation:

Answer:

Note: it seems a typo, should be 2340 instead of 2240

Sum of interior angles of a polygon:

S = 180(n - 2)

We have:

S = 2340

Find n:

180(n - 2) = 2340n - 2 = 2340/180n - 2 = 13n = 15

15 sides

90(2n-4)=Sum of interiors

2240=90(2n-4)2240=180n-360180n=2600n=2600/180n=14.4=14

Answer:

0.0336

Step-by-step explanation:

the hint says so

According to the result of the test statistic, the approximate p-value for Fay's test is of 0.034.

How to find the p-value of a test?

It depends on the test statistic z, as follows.

For a left-tailed test, it is the area under the normal curve to the left of z, which is the p-value of z.For a right-tailed test, it is the area under the normal curve to the right of z, which is 1 subtracted by the p-value of z.For a two-tailed test, it is the area under the normal curve to the left of -z combined with the area to the right of z, hence it is 2 multiplied by 1 subtracted by the p-value of z.

In this problem, we are testing if the proportion is greater than a value, hence it is a right-tailed test.

The test statistic is z = 1.83, which has a p-value of 0.966.

1 - 0.966 = 0.034.

Hence, the approximate p-value for Fay's test is of 0.034.

You can learn more about p-values at brainly.com/question/13873630

Answer:

The probability that they will meet is 0.4375

Step-by-step explanation:

Let A and B be two friends who choose to meet the same one-hour period.Since there are 60 minutes in an hour therefore n= 60

A can wait for 15 minutes

So the probability of A to meet is given by P(A)= (15/60)= 1/4

Similarly

B can wait for 15 minutes

So the probability of B to meet is given by P(B)= (15/60)= 1/4

The probability that A cannot meet is given by 1- P(A)= 1-1/4= 3/4

Similarly

The probability that B cannot meet is given by 1- P(B)= 1-1/4= 3/4

And

The probability that both A and B cannot meet is given by = 3/4*3/4= 9/16

So the probability that both will meet = 1- 9/16= 7/16= 0.4375

Answer:

[tex]\frac{3}{2}[/tex]

Step-by-step explanation:

3 [tex]\frac{3}{4}[/tex] x [tex]\frac{2}{5}[/tex]

[tex]\frac{15}{4}[/tex] x [tex]\frac{2}{5}[/tex]

[tex]\frac{30}{20}[/tex] = [tex]\frac{3}{2}[/tex]

or another way

[tex]\frac{15}{4}[/tex] x [tex]\frac{2}{5}[/tex]

[tex]\frac{3}{2}[/tex] x [tex]\frac{1}{1}[/tex] = [tex]\frac{3}{2}[/tex]

Answer:

Given diagram is not pentagon it is hexagon.

answer for 5 no question is 66 degree.

Step-by-step explanation:

Hope it helps u!!

Answer: 12

Step-by-step explanation:

Answer:

x=70

Step-by-step explanation:

Because these angles are on the opposite sides of each other, they have to add up to 180. This will make the equation 2x-5+45=180. Simplify this to get 2x+40=180. Subtract 40 from both sides to get 2x=140. Divide each side by 2 to isolate x. x=140/2. Simplify this to get x=70.

If this helps please mark as brainliest

Answer:

[tex]h(x) = (\frac{f}{g})(x)[/tex]

Step-by-step explanation:

Given

[tex]f(x) = 3x^3 + 9x^2 -12x[/tex]

[tex]g(x) = x - 1[/tex]

[tex]h(x) = 3x^2 + 12x[/tex]

Required

What defines h(x)

Looking at the degree of f(x), g(x) and h(x), we have:

[tex]h(x) = (\frac{f}{g})(x)[/tex]

See proof

[tex]h(x) = (\frac{f}{g})(x)[/tex]

This gives:

[tex]h(x) = \frac{f(x)}{g(x)}[/tex]

[tex]h(x) = \frac{3x^3 + 9x^2 -12x}{x - 1}[/tex]

Factorize

[tex]h(x) = \frac{(3x^2 + 12x)(x - 1)}{x - 1}\\[/tex]

[tex]h(x) = 3x^2 + 12x[/tex]

Answer:

its a rectangle

Step-by-step explanation:

Answer:30.3

Step-by-step explanation:

30.3% is the probability that a data value in a normal distribution is between a z-score of -1.52 and a z-score of -0.34.

What is probability?

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

We can use a standard normal distribution table or calculator to find the probability that a data value falls between two given z-scores.

The probability of a data value being between a z-score of -1.52 and a z-score of -0.34 is equal to the area under the standard normal distribution curve between these two z-scores. We can find this area by subtracting the area to the left of -0.34 from the area to the left of -1.52:

P(-1.52 < z < -0.34) = P(z < -0.34) - P(z < -1.52)

Using a standard normal distribution table or calculator, we can find that P(z < -0.34) is approximately 0.3665 and P(z < -1.52) is approximately 0.0643. Therefore, the probability of a data value being between a z-score of -1.52 and a z-score of -0.34 is:

P(-1.52 < z < -0.34) = 0.3665 - 0.0643 = 0.3022

Rounding this answer to the nearest tenth of a percent, we get:

P(-1.52 < z < -0.34) ≈ 30.2%

Therefore, the closest answer choice is B, 30.3%.

Learn more about probability here:

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Answer:

4/10 is the same as 40/100

there fore 4/10+40/100=40/100+40/100=

80/100

hope it helps :)

Answer:

80/100

4/5 as reduced fraction

Step-by-step explanation:

4/10 + 40/100

use common denominator of 100

40/100 + 40/100 = 80/100

As a reduced fraction

4/5

Answer:

C) 56

Step-by-step explanation:

DEG and FEG are on a straight line forming 180 degree.

Set your formula up as

180 = (3x+31)+(2x-6)

180 = 3x +2x +31 - 6

180 - 31 + 6 = 5x

155 = 5x

155/5 = x

31 = x

Now substitute 31 in place of x

FEG = (2*31-6)

FEG = 56

Answer:

[tex]\displaystyle (-3, 6)[/tex]

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to Right

Algebra I

Coordinates (x, y)Midpoint Formula: [tex]\displaystyle (\frac{x_1 + x_1}{2}, \frac{y_1 + y_2}{2})[/tex]

Step-by-step explanation:

Step 1: Define

Point A(-2, 5)

Point B(-4, 7)

Step 2: Find Midpoint

Substitute in points [Midpoint Formula]: [tex]\displaystyle (\frac{-2 + -4}{2}, \frac{5 + 7}{2})[/tex]Add: [tex]\displaystyle (\frac{-6}{2}, \frac{12}{2})[/tex]Divide: [tex]\displaystyle (-3, 6)[/tex]

Answer:

A.) The aircraft rose quickly into the air at takeoff, and then continued at a constant altitude.:)

Answer:

Omg, thank u so much I am on this question rn on Edulatic and I have 100 Q's and I'm only on Q 45, This Question rly helped me a lot bc it came with the answer. God Bless you!!

Answer:

1/12

Step-by-step explanation:

To find experimental probability you have to solve the Number of times an event occurs / Total number of trials. So since the 5 only appears once and there are 12 numbers, it would be 1/12. Did this help?

The experimental probability of rolling 5 will be 0.18.

What is probability?

Its fundamental concept is that someone will nearly surely occur. The proportion of positive events in comparison to the total of occurrences. Then the probability is given as,

P = (Favorable event) / (Total event)

The table is given below:

Number Total

1 12

2 16

3 21

4 23

5 18

6 10

The experimental probability of rolling a 5 is calculated as,

P = 18 / (12 + 16 + 21 + 23 + 18 + 10)

P = 18 / 100

P = 0.18

Thus, the probability is 0.18.

More about the probability link is given below.

https://brainly.com/question/795909

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Answer:

36

Step-by-step explanation:

39+1-24/6 =

we gotta follow pemdas so we divide 24 by 6 first

39+1-4=

then its just adding and subtracting so just go left to right

40-4=

36

0.33333 reapeating is the answer.

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CAN YOU HELP ME???!!!!!??!!?

HELP ME PLEASE... WILL GIVE BRAINLIEST. WORTH A LOT OF POINTS

Professor M presented the pair of equations shown below:

y = 6x − 10

y = 2x − 2

Part A: Explain to Professor M how you will solve the pair of equations by using either substitution or elimination. Show all the steps you use and write the solution in (x, y) form.

Part B: If she asked you to graph the two equations, at what point will the lines representing the two equations intersect? Explain how you know this.

Answer:

Yes

Step-by-step explanation:

Pythagorean's Theorum is that a^2 + b^2 = c^2

a and b are the sides of the triangle and c is the hypotenuse. 33x33+56x56=4225 sqrt4225 is 65. Everything checks out.

9514 1404 393

Answer:

C. 7

Step-by-step explanation:

To find the value of 2Ω3 using the definition of AΩB, we are replacing A with 2, and B with 3. This seems to give us ...

2Ω3 = 2² +3² -2·3 = 4 + 9 - 6 = 7

The value of 2Ω3 is 7.

Answer:

27/72 IS MY best guest

Step-by-step explanation:

Answer:

3 (divided by sign) 1/3

Step-by-step explanation:

Answer:

-s+6t

Step-by-step explanation:

7s-(2t+3s)-(5s-8t)

7s-2t-3s-5s+8t

7s-3s-5s-2t+8t

4s-5s+6t

-s+6t

9514 1404 393

Answer:

(d) {-7, -2, 11, 20}

Step-by-step explanation:

You can put the domain values into the function and evaluate to find the corresponding range values. Here, we'll do them "all at once."

y = 3{-4, -1, 2, 5} +5

= {-12, -3, 6, 15} +5

= {-7, 2, 11, 20} . . . . . matches choice d

_____

To save yourself some arithmetic, you can observe that the answer choices differ in the 2nd and 4th values, so you only need to evaluate the function for x=-1 or x=5 to determine the correct answer choice.

Slope : -2

y - intercept : 3

Equation : y = -2x+3

Answer:

Step-by-step explanation:

Slope: -0.5

Y-Intercept: 3

y = -0.5x+3