About 9% of the population has a particular genetic mutation. 400 people are randomly selected. Find the mean for the number of

Question

2 years ago

14

people with the genetic mutation in such groups of 400

1 answer:

never [62] · Answer 1 · 2022-07-25T19:23:01+03:00

never [62]2 years ago

7 0

Answer:

36 people

Step-by-step explanation:

The expected value E(X) = mean of sample = np

Where, p = population proportion, p = 9% = 0.09

n = sample size, = 400

The mean of the number of people with genetic mutation, E(X) = np = (400 * 0.09) = 36

36 people