(Solved): Statistics: Problem 55. An urn contains n balls. Suppose you draw one ball which happens to be whi ...

Statistics:

Problem 55. An urn contains n balls. Suppose you draw one ball which happens to be white. Determine the probability that there are k white balls in the urn. Now suppose you add one ball to the urn containing n balls, and then draw a ball at random which happens to be white. What is the probability there were no white balls in the urn?