Suppose the time line is discretized into intervals, with the length of each interval being 1 second. A web server has probability p (0 < p < 1) of getting 1 visit in each time interval and 1-p probability of getting 0 visit. (a) How long is the server expected to wait until it gets 100 visits? [Hint: You may use geometric distribution.] (b) How many visits is the server expected to get during 1 hour?