|
Arrivals to a bank automated teller machine (ATM) are distributed according to a Poisson distribution with a mean equal to three per 15 minutes.
a. Determine the probability that in a given 15-minute segment, no customers will arrive at the ATM.
b. What is the probability that fewer than four customers will arrive in a 30-minute segment? |
| New search. (Also 1294 free access solutions) |