Question: Fifty chocolate chip cookies are to be made using 150 chocolate chips. The number of chocolate chips per cookies is a Poisson random variable. (a)

Fifty chocolate chip cookies are to be made using 150 chocolate chips. The number of chocolate chips per cookies is a Poisson random variable.

(a) What is the probability a cookie has at least 4 chocolate chips?

(b) How many chocolate chips must be used in order to make the probability a cookie has at least one chocolate chip be at least 0.90?

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