For the past 30 days, Naomi has been recording the number of customers at her restaurant between 10am and 11am. During that hour, there have been fewer that 20 customers on 25 out of 30 days. What is the experimental probability that there will be 20 or more customers on the thirty-first day?

Out of five men and five women, we form a committee consisting of four different people. assuming that each committee of size four is equally likely, find the probabilities of the following events: 1. the committee consists of two men and two women 2. the committee has more women than men. 3. the committee has at least one man. for the remainder of the problem assume that alice and bob are among the ten people being considered. 4. both alice and bob are members of the committee.