Question

Question 1

Assume that a procedure yields a binomial distribution.
n = 48 p = 0.44. Find the mean.

Answer 1

The mean is 21.12.

Explanation:

Binomial probability distribution

Probability of exactly x successes on n repeated trials, with p probability.

The expected value of the binomial distribution is:

`E(X) = np`

In this question:

`n = 48, p = 0.44`

Mean:

`E(X) = np = 48(0.44) = 21.12`

The mean is 21.12.