Statistics question...help

Question

 

When Kevin plays chess with Aaron, the probability that Kevin wins is 0.75. If Aaron and Kevin play 25 games, what is the probability that Kevin wins exactly 15 times?

 

0.02

0.32

0.04

0.97

Answer 1

use,Binomial Random Variable Probability

P(x)=(n!/x!(n−x)!)*(p^x)*(1−p)^(n−x))

n = number of trials
x = number of successes
p = probability event of interest occurs on any one trial

 

=0.04