Sample Problems Chapter 5 - 49 p 268 Airline passengers...

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49, p. 268 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.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.
.010336c. Compute the probability of no arrivals in a 15-second period.
d. Compute the probability of at least one arrival in a 15-second period.
61, p. 277 The budgeting process for a midwestern college resulted in expense forecasts for the coming year (in $millions) of $9, $10, $11, $12, and $13. Because the actual expenses are unknown, the following

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