(a) Mimi has seven books from the Statistics is Fun series. She plans on bringing three of the
seven books with her in a road trip. How many different ways can the three books be selected?
(b) UMUC Stat Club must appoint a president, a vice president, and a treasurer. There are 8
qualified candidates. How many different ways can the officers be appointed?
9 . Let random variable x represent the number of heads when a fair coin is tossed two times.
(a) Construct a table describing the probability distribution.
(b) Determine the mean and standard deviation of x . (Round the answer to two decimal places)
10. Mimi plans on growing tomatoes in her garden. She has 20 cherry tomato seeds. Based on
her experience, the probability of a seed turning