Abox contains ten sealed envelopes numbered 10. the rst ve contain no money, the next three each contain $5, and there is a $10 bill in each of the last two. a sample of size 3 is selected with replacement (so we have a random sample), and you get the largest amount in any of the envelopes selected. if x1; x2; andx3 denote the amounts in the selected envelopes, the statistic of interest is m = the maximum of x1; x2, and x3. (a) obtain the probability distribution of this statistic. (b) what is the expected value and variance of this statistics?