Binomial Distribution · Exercise 29

Let X = the number of games won in that upcoming month.

Only 9% of the population of Niger has access to the internet. Suppose we randomly sample 150 people in Niger. Let X = the number of people who have access to the internet.

(a) What is the probability distribution for X?
(b) Using the formulas, calculate the mean and standard deviation of X.
(c) Use your calculator to find the probability that 15 people in the sample have access to the internet.
(d) Find the probability that at most ten people in the sample have access to the internet.
(e) Find the probability that more than 25 people in the sample have access to the internet.

Its source prints no answer for this problem, so there's nothing to check against.

OpenStax, Introductory Statistics 2e · §4.3 Binomial Distribution · Exercise 29