Assume that women's heights are normally distributed with a mean of 63.6 inches and a standard deviation of 2.5 inches. If 90 women are randomly selected, find the probability that they have a mean height between 62.9 inches and 64.0 inches.
A) 0.9318
B) 0.1739
C) 0.7248
D) 0.0424

Question

Quizplus · Accepted Answer

The standard error of the mean is 2.5/sqrt(90). Using the z-scores for 62.9 and 64.0, the probability of the mean being between these values is approximately 0.9318.

Assume That Women's Heights Are Normally Distributed with a Mean