Marie R.

asked • 09/18/15

Statistcs help

With a height of 63 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 66.5 in and a standard deviation of 1.3 in.

a. What is the positive difference between Johnson’s height and themean?
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 minus−2 and 2, is Johnson’s height usual or unusual?

1 Expert Answer

By:
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Timothy M. answered • 09/18/15

Ph.D. in neuroscience with specialty in statistical analysis

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