STATISTICS 300-An urn contains 8 black and 5 green balls
January 10th, 2018
An urn contains 8 black and 5 green balls. Four balls are randomly drawn from the urn in succession, with replacement. That is, after each draw, the selected ball is returned to the urn. What is the probability that all 4 balls drawn from the urn are black? Round your answer to three decimal places.