6.4. Repeat Problem 6.2 when the ball selected is replaced in the urn before the next selection. 6.2. Suppose that 3 balls are chosen without replacement from an urn consisting of 5 white and 8 red balls. Let.x, equal 1 if the ith ball selected is white, and let it equal 0 otherwise. Give the joint probability mass function of a. x, b. x, xx

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