An average of 42 customers arrive each 8 hours at a bank. The average time to serve the customer is 7 minutes. Enter probabilities as decimal numbers = 98.5%, enter as 0.985; 5.5% enter as 0.055.

1. What is the average number of customers waiting to be assisted?
2. What is the average time waiting to be assisted (in minutes)?
3. What is the probability there are no customers in the bank?
4. What is the probability there are at most 1 customer waiting?