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USA Today reported that for all airlines, the number of lost bags was
May: 6.02 per 1000 passengers December: 12.78 per 1000 passengers
Note: A passenger could lose more than one bag.
(a) Let r = number of bags lost per 1000 passengers in May. Explain why the Poisson distribution would be a good choice for the random variable r. What is ( to the nearest tenth?
(b) In the month of May, what is the probability that out of 1000 passengers, no bags are lost? that 3 or more bags are lost? that 6 or more bags are lost?
(c) In the month of December, what is the probability that out of 1000 passengers, no bags are lost? that 6 or more bags are lost? that 12 or more bags are lost? (Round l to the nearest whole number.) |
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