Introduction to Normal Distributions

Question 1

Check all of the situations that you would expect to be approximately normally distributed.

Revolt · Accepted Answer

the SAT scores of high school seniors; the shoe sizes of 17-year-old males; the age at which a child loses his or her first tooth

Question 2

Distribution CMean =

Revolt · Accepted Answer

200

Question 3

Distribution CMean =

Revolt · Accepted Answer

200

Question 4

Order the standard deviations of the distributions from least to greatest.

Revolt · Accepted Answer

B, C, A

Question 5

Distribution BMean =

Revolt · Accepted Answer

100

Question 6

Check all of the temperatures that are within one standard deviation of the mean.

Revolt · Accepted Answer

74°; 79°

Question 7

Distance of Jose’s height from mean: in.

Revolt · Accepted Answer

2

Question 8

What percentage of goldfish will have lengths between 4.6 inches and 9.4 inches?

Revolt · Accepted Answer

95%

Question 9

Distance of Jamal’s height from mean: in.

Revolt · Accepted Answer

–2.3

Question 10

What is the height of a student whose z-score is 3?

Revolt · Accepted Answer

55”

Introduction to Normal Distributions Answers