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An airline knows from experience that the number of suitcases lost each week is normally distributed...

An airline knows from experience that the number of suitcases lost each week is normally distributed with a mean of 21.4 and a standard deviation of 4.5. Assuming a Poisson distribution, what are the probabilities that in any given week they will lose:

a) exactly 25 suitcases?

b) at most 25 suitcases?

If this is a normal distribution, what are the probabilities that in any given week they will lose:

c) exactly 25 suitcases?

d) at most 25 suitcases?

Math   Statistics-And-Probability   
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