Constance,

A Abs(62-71.4)=9.4 in

B.9.4/2.8 =3.357....

C.Z=(62-72.4)/2.8=-3.357..

D. since Z is outside the "usual" interval of -2 and 2 Johnson's height would be considered unusual.

Hope this helps

Jim

Constance A.

asked • 10/12/15I NEED TO FIND THE ANSWER TO THIS QUESTION.

With a height of 62 in, Johnson was the shortest president of a particular club in the past century. The club presidents of the past century have a mean height of 71.4 in and a standard deviation of 2.8 in.

a. What is the positive difference between Johnson's height and the mean?

b. How many standard deviations is that [the difference found in part (a)]?

c. Convert Johnson's height to a z score.

d. If we consider "usual" heights to be those that convert to z scores between −2 and 2, is Johnson's height usual or unusual?

The positive difference between Johnson's height and the mean is ? in.

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Constance,

A Abs(62-71.4)=9.4 in

B.9.4/2.8 =3.357....

C.Z=(62-72.4)/2.8=-3.357..

D. since Z is outside the "usual" interval of -2 and 2 Johnson's height would be considered unusual.

Hope this helps

Jim

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