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

Question

asked Sep 18, 2021 142k views

2 Answers

Varaquilex · Answer 1 · 2021-09-22T17:51:52+0000

Answer:

0.375, or 3/8

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