Question: Girl Scout Cookies

The number of boxes of Girl Scout cookies sold by each of the girl scouts in a

Midwestern city has distribution which is approximately normal with mean μ = 75 boxes and standard deviation σ = 30 boxes.

a. Find the probability that a scout chosen at random sold more than 65 boxes. SW

b. Find the probability that a scout chosen at random sold between 65 and 85 boxes of cookies. SW

c. Find the probability that the sample mean number of boxes sold by a random sample of 64 scouts is between 65 and 85 boxes of cookies. SW