Based on requests from the Tokyo branch, you define two random variables: - X: # of breakfast arrivals per quarter-hour. The average is 4. -Y: # of guests that request a late checkout. There is a 15% chance of a guest will do so, and 100 rooms are booked tonight. Henry asks you to find these values - P(X<7): the probability fewer than (and not including) 7 gusts arriver at breakfast in a quarter-houris---?