Name: 21. The average number of calls received by a customer service department in a 10-minute period is
4.
a.
b.
What is the probability that between 10:00 and 10:20 the switchboard will receive exactly 8
calls?
What is the probability that between 10:00 and 10:05 the switchboard will receive fewer than
2 calls?
What is the probability that between 10:00 and 10:05 the switchboard will receive more than
3 calls?
C.