6. (5 points) Suppose that an urn contains 3 different types of balls: red, green and blue. Let p1 denote the proportion of red balls, p2 denote the proportion of green balls and p3 denote the proportion of blue balls. Here 23:12);- = 1. Suppose also that 100 balls are selected with replacement, and there are exactly 38 red, 29 green and 33 blue. Find the M.L.E. p3- of pi, i = 1,2,3. P1 p2 = P3 =