SOLUTION: a fair coin is flipped 3 times and a sequence of heads and tails is recorded. What is the probability that exactly 2 tails occurs?
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Question 737490: a fair coin is flipped 3 times and a sequence of heads and tails is recorded. What is the probability that exactly 2 tails occurs? Answer by Susan-math(40) (Show Source):
You can put this solution on YOUR website! The Sample space is {HHH,HHT, HTH,HTT, THH,THT, TTH, TTT}
Those that have 2H are: HHT, HTH and THH.
So the probability of 2H is 3/8.
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