SOLUTION: Gary schwartz is the top saleman for his company. records indicate that he makes a sle on 70% of his calls. If he calls on four potential clients, what it the probability that he m

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Question 724238: Gary schwartz is the top saleman for his company. records indicate that he makes a sle on 70% of his calls. If he calls on four potential clients, what it the probability that he makes exactly 3 sales? What is the probability that he makes exactly 4 sales?
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Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
Gary schwartz is the top saleman for his company. records indicate that he makes a sale on 70% of his calls. If he calls on four potential clients, what it the probability that he makes exactly 3 sales? What is the probability that he makes exactly 4 sales?
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Binomial Problem with n = 4 and p(sale) = 0.7 ; p(no sale) = 0.3
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P(x = 3) = 4C3*0.7^3*0.3 = 4*0.343*0.3 = 0.4116
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cheers,
Stan H.