
Variation+Location
Q: With a height of 65 in, George was the shortest of a particular club in the past century. The club presidents of the past century have a mean height of 67.1 in a standard deviation of 1.8 in.
a. Convert George's height to a Z score.
b. If we consider "usual" heights to be those that convert to z score between 2 and 2, is George's height usual or unusual?
Ans:
a. The z score is __? (Type an integer or decimal rounded to two decimal places as needed)
b. Is George's height Usual or Unusual? _________

where are you stuck?
$\displaystyle Z = \dfrac{X\mu}{\sigma}$