Question

i need help with this work, Women height have a mean of 63.6 in. and a standard deviation of 2.5 inches. Find the z-score corresponding to a woman with a height of 70 inches and determine whether the height is unusual. need help

Answer 1

\[z=\frac{x-\mu}{\sigma}~~\Rightarrow~~z=\frac{70-63.6}{2.5}=2.56\]
For a Z-distribution, the mean is 0 and the standard deviation is 1. What does 2.56 tell you about this woman's height?