Question

Not all visitors to a certain company's website are customers. in fact, the website administrator estimates that about of all visitors to the website are looking for other websites. assuming that this estimate is correct, find the probability that, in a random sample of visitors to the website, exactly actually are looking for the website.

Answer 1

It's a binomial problem with n = 5, p = 0.12 ; x = 4
P(x=4) = 5C4(0.12)^4(0.88)^1 = 5*(0.00030736)(0.88) = 0.000912384..