AP Stats Chapter 9 Review

With a mean of 84 and standard deviation of 2, what value would put you in the top 10%?

• 86.56

• 92.11

• 105.65

• 87.09

With a mean of 70 and standard deviation of 7,

what percentage of values fall between 56 and 84?

Find the z-score

x = 36 μ= 42 σ = 5

• 0.74

• 1.2

• -1.2

• 1.03

Find the z-score

x = 19 μ= 14 σ = 2.1

Type in your answer to the nearest hundredth

If the mean is 100 and the standard deviation is 5

What is the probability of having a value between 72 & 102?

• 0.3448

• 0.6554

• 0.0854

• 0.7132

If the mean if 100 and the standard deviation is 5

What is the probability of a value that is AT LEAST 95.

Type your answer to the nearest ten thousandth place

With a mean of 62 and standard deviation of 11

what is the probability of a value that is AT MOST 70

Round your answer to the nearest ten thousandth

On a standard normal curve, what is the probability of a value between -2.34 and -0.39?

• 0.4539

• 0.27.05

• 0.6409

• 0.3386

On a standard normal curve, what is the probability of a value LESS than 1.36?

Type your answer to the ten thousandth place.

On a standard normal curve, what is the probability of a number being AT LEAST -2.15?

Type your answer to the ten thousandth place.