SOLUTION: A baseball player has a batting average of 0.17. What is the probability that he has exactly 4 hits in his next 7 at bats?
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(1 pt) You flip
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-> SOLUTION: A baseball player has a batting average of 0.17. What is the probability that he has exactly 4 hits in his next 7 at bats?
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(1 pt) You flip
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Question 393180: A baseball player has a batting average of 0.17. What is the probability that he has exactly 4 hits in his next 7 at bats?
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(1 pt) You flip a fair coin 10 times. What is the probability that it lands on heads exactly 3 times?
The probability of exactly 3 heads is .
What is the probability that it lands on heads at least 3 times?
The probability of at least 3 heads is
Thankyou Answer by ewatrrr(24785) (Show Source):
Hi
Note: The probability of x successes in n trials is:
P = nCx* where p and q are the probabilities of success and failure respectively. In this case p =.17 q = .83
nCx =
P(exactly 4 hits out of 7 at bat) = 35(.17)^4(.83)^3 = .0167
Coin experiment p and q = 1/2 or .5
P(3 heads out of 10 flips) = .1172 = 120*(.5)^3(.5)^7
P(at least 3 heads out of 10 flips) = .9453 = 1-P(0)-P(1)-P(2)
