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43)It is known that 65% of Empire plan customers order their prescriptions via mail-order at least...

43)It is known that 65% of Empire plan customers order their prescriptions via mail-order at least once a year. Suppose we randomly select 6 customers.

a)What is the probability that exactly 4 of them have ordered via mail-order in the past year?

b)What is the probability that at most one has mail-ordered in the last year?

c)Let X be the number of customers amongst these 6 who have placed an order via mail for prescription drugs in the last year. Which distribution does X follow?

Math   Statistics-And-Probability   
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