Question

If you flip a fair coin 4 times, what is the probability that you will get exactly 2 tails?

Answer 1

Answer:

0.375, or 3/8

Step-by-step explanation:

This is binomial probability, with n = 4, x = 2 and P(tails) = 0.5.

Using a calculator with probability distribution functions built in, we evaluate

binompdf(4,0.5,2) = 0.375

Thus, P(exactly 2 tails) = 0.375, or 3/8

Answer 2

Answer:

0.375

Step-by-step explanation:

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