SOLUTION: A salesperson determines that the probability of making a sale to a customer is 1/9. What is the probability of making a sale to eight of the next seventeen customers?

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Question 427371: A salesperson determines that the probability of making a sale to a customer is 1/9. What is the probability of making a sale to eight of the next seventeen customers?
Answer by sudhanshu_kmr(1152) About Me  (Show Source):
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probability of making a sale to a customer i.e P(A) = 1/9

probability of not making a sale to a customer i.e. P'(A) = 8/9


probability of making a sale to 8 of the next 17 customers :
= 17C8* (1/9)^8 *(8/9)^9