The total amount spent on make-up by all the female students in a popular

private university has a distribution that is skewed to the right (not normally

distributed), with a mean of Tk, 2840, and a standard deviation of Tk. 672.

Find the probability that the mean amount spent on make-up by a random

sample of 36 female students would be: 10

a. Between Tk. 2600 and Tk. 2950

b. Less than Tk. 3060