Question

Assume that women's weights are normally distributed with a mean given by ?=143 lb and a standard deviation given by ?=29 lb.

(a) If 1 woman is randomly selected, find the probabity that her weight is between 113 lb and 173 lb

(b) If 5 women are randomly selected, find the probability that they have a mean weight between 113 lb and 173 lb

(c) If 82 women are randomly selected, find the probability that they have a mean weight between 113 lb and 173 lb

NOTE: If Excel or your calculator returns a value like 1E-05, replace this with 1*10^(-5).

Answer 1