SOLUTION: Jim can drive a golf ball over 220 yards 40% of the time. He regularly plays on a golf course where drives of that distance are needed on 12 holes. Determine the probability that e
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Question 253287: Jim can drive a golf ball over 220 yards 40% of the time. He regularly plays on a golf course where drives of that distance are needed on 12 holes. Determine the probability that exactly 7 of his drives will be over 220 yards
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
This is a binomial distribution B(12,0.4)
The chance of exactly 7 getting over is 12C7 x (0.4)^7 x (0.6)^5
12C7 = 792 0.4^7 = 128/78125 and 0.6^5 = 243/3125
Multiplying up gives 0.1009023713 so lets call it 10%
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