Question

What is the probability of flipping a coin 15 times and getting heads 7 times? Round your answer to the nearest tenth of a percent.

A. 19.6%
B. 15.3%
C. 4.2%
D. 9.2%

Answer 1

what grade is this

Answer 2

@lilpac

Answer 3

12th

Answer 4

This is a binomial distribution.
\[\large P(7\ heads)=\frac{15!}{7!8!}\times(0.5)^{7}\times(0.5)^{8}\]