Question: The random variable in Exercise 7.30 was the number of stores entered by customers at a mall. Suppose that the random variable is Poisson distributed

The random variable in Exercise 7.30 was the number of stores entered by customers at a mall. Suppose that the random variable is Poisson distributed with a mean of 4.

a. What proportion of mall customers enter 5 stores or more?

b. Compute the probability that a customer enters 3 or fewer stores.

c. Calculate the probability that a customer enters exactly 4 stores.

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