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Thirty percent of all customers who enter a store will make a purchase. Suppose 10 customers...

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Basic Math

Thirty percent of all customers who enter a store will make apurchase. Suppose 10 customers enter the store, and that they makeindependent purchasing decisions.

(a) Let X be the number, out of the 10 customers in the store,who will make a purchase. Write the binomial probability densityfunction for this situation.

(b) Use the binomial distribution to calculate the probabilityexactly 5 customers make a purchase.

(c) Find the probability that 4 or fewer customers make apurchase.

(d) Find the probability that 7 or more customers make apurchase.

Answer & Explanation Solved by verified expert
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SolutionWe are givena Let X be the number out of the 10 customers in the storewho will    See Answer
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