Since not all consumers show up for their reservations, a boat company always overbooks. Assume a driver is booked with 6 consumers on the same route and the boat can accommodate up to 4 consumers. The probability that a consumer does not show up is 0.2, and consumers behave independently.

(a)What is the expected number of passengers that will show up?

(b)What is the probability that every passenger who shows up can be accommodated?