SOLUTION: Find the probability of at most one tail appearing on four tosses of a coin. (Round your answer to two decimal places.)

Algebra ->  Probability-and-statistics -> SOLUTION: Find the probability of at most one tail appearing on four tosses of a coin. (Round your answer to two decimal places.)       Log On


   

Question 1149886: Find the probability of at most one tail appearing on four tosses of a coin. (Round your answer to two decimal places.)
Answer by ikleyn(52781) About Me  (Show Source):
You can put this solution on YOUR website!
.

The probability of at most one tail appearing on four tosses is


    P( at most 1 ) = P(0) + P(1) = %281%2F2%29%5E4 + C%5B4%5D%5E1%2A%281%2F2%29%5E3%2A%281%2F2%29 = 1%2F16 + 4%2F16 = 5%2F16.     ANSWER