Stumped on math problem

Question

A manufacturing process has a 65% yield, meaning 65% of the products are acceptable and 25% are defective. If four of the products are randomly selected, find the probability that all of them are acceptable. Round to the thousandth place.

Answer 1

Well, first of all, I assume you mean 35% are defective.

You need the binomial distribution with n = 4 and p = .65

P = (.65)⁴ and you should do the arithmetic.