Question

Natia

The heights of men in a survey are distributed normally about the mean.
Suppose the survey included data on 100 men. About how many would you expect to be 69−71 inches tall?


66 men

43 men

54 men

39 men

Answer 1

Answer : 43 men

We calculate the percentage from the graph

Percentage of men (69 inches tall ) = 13%

Percentage of men (70 inches tall ) = 16%

Percentage of men (71 inches tall ) = 14%

Percentage of men (69 - 71 inches tall) = 13 + 16 + 14 = 43%

Suppose the survey included data on 100 men.

number of men (69 - 71 inches tall) = 100 * 43% == 43 men