pls answer c and d thanks

Airline passengers arrive randomly and independently at the passenger-screening facility at a major international airport. The mean arrival rate is 10 passengers per minute. (Round your answers to six decimal places.) (a) Compute the probability of no arrivals in a one-minute period. 0.000045 (b) Compute the probability that three or fewer passengers arrive in a one-minute period. 0.010336 (c) Compute the probability of no arrivals in a 9-second period. (d) Compute the probability of at least one arrival in a 9-second period