use the appropriate appendix table or technology to answer this question. 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. (Rounc answers to six decimal places.) (a) Compute the probability of no arrivals in a one-minute period. (b) Compute the probability that three or fewer passengers arrive in a one-minute period. (c) Compute the probability of no arrivals in a 21-second period. (d) Compute the probability of at least one arrival in a 21-second period. 4

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