For a binomial random variable X, the probability of x successes in n Bernoulli trials is calculated as

Multiple choice question.

= np(1-p)

= n!x!(n−x!)
px(1-p)n-x

= n!x!(n−x!)
pn-x(1-p)x

= np

= e−μμxx!

The correct answer is: np(1-p).

The correct answer is:

= nCx * p^x * (1-p)^(n-x)

Where nCx is the binomial coefficient, representing the number of ways to choose x successes from n trials.