SOLUTION: A fair coin is tossed four times. What is the probability of obtaining at least 3 tails? P(3 tails or more)= (Type a fraction and simplify)

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Question 871730: A fair coin is tossed four times. What is the probability of obtaining at least 3 tails?
P(3 tails or more)= (Type a fraction and simplify)
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
p = .5, n = 4
P(x ≥3) = 1 - binomcdf(4, .5, 2)= .3125 0r 31.25%