Consider problem 5.71 (regarding telephone calls made independently of each other). Find an example through a web search of a similar problem, and explain why the example you chose uses independent random variables.
Question 5.71: Two telephone calls come into a switchboard at random times in a fixed one-hour period. Assume that the calls are made independently of one another. What is the probability that the calls are made
a) in the 1st half hour?
b) within five minutes of each other?