1. Let X represent the time (in minutes) needed to fill out an application. Suppose that X has a uniform distribution over the interval (2, 12).

a. What is the average amount of time that a person will take to complete their application?

b. What is the standard deviation of X?

c. What is the probability that a person will take longer than 5 minutes to complete their application?

2. The random variable has mean =21, and the random variable has mean =12. If =3+5, find mean of W, .