SOLUTION: Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 12% of all visitors to the website are looking for other web

Algebra ->  Probability-and-statistics -> SOLUTION: Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 12% of all visitors to the website are looking for other web      Log On


   



Question 409908: Not all visitors to a certain company's website are customers. In fact, the website administrator estimates that about 12% 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 4 visitors to the website, exactly 3 actually are looking for the website.
Round your response to at least three decimal places.

Answer by edjones(8007) About Me  (Show Source):
You can put this solution on YOUR website!
Let x=.88 and y=.12
nCr=4C3=4 coefficient of the binomial expansion.
4x^3y=.3271 Probability exactly 3 actually are looking for the website.
.
Ed