Normal Probability Z Table

What is the z-score that corresponds to 80.23% of the data to the left?

• .86

• .85

• .83

• .80

Find the Z-score.

Mean = 22

Standard Deviation: 3.1

x = 29

• 2.26

• 16.45

• -2.26

• 1.26

Find the Z-score.

Mean = 21

Standard Deviation: 1.3

x = 22

• 0.77

• 5.33

• 1.07

• 1.26

Find the z-score.

Mean = 40

Standard Deviation: 1.4

x = 42

• 1.43

• 1.28

• -1.4

• 1.24

What is the probability that a score is above (right of) -.64?

• .2643

• .7357

• .7389

• .2611

If heights of 3rd graders follow a normal distribution with a mean of 52 inches and a standard deviation of 2.5 inches, what is the z score of a 3rd grader who is 47 inches tall?

• -5

• -2

• 2

• 5

Use the image of the normal graph provided. What is the value of the standard deviation?

• 6

• 12

• 36

• 18

What is the area under the curve between z = 0 and z = 1.45?

• .9265

• .4265

• .4500

• .5000

• 99.04%

• 0.96%

• 98.93%

• 97.68%

Which of the following is the correct expression of the probability?