Question $56(1$ ?point $)$

Use the following information to answer the next $8$ ?questions.

Melanie is the manager of the Clean Machine car wash and has gathered the following information. Customers arrive at a rate of $?=6$ ?cars per hour according to a Poisson distribution. The car wash machine has a service rate that follows an exponential distribution $?=8$ ?cars $?$ s $.$ ?per hour. Assume the car wash is operational $10$ ?hours per day.