Question 281485
You flip a coin 10 times.What is the P(8H)?
P(8heads in 10) = 10C8(1/2)^8(1/2)^2 = 45/2^10 = 0.0439
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What is the P(>8H)?
P(9<= x <=10) = (10C9 + 10C10)/2^10 = (10+1)/2^10 = 11/2^10 = 0.0107
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Cheers,
Stan H.