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Question 1: Roll two dice (X1, X2) and find the probability mass function of X if...

Question 1: Roll two dice (X1, X2) and find the probability mass function of X if X is:

a) The smallest number min(X1, X2)

b) The difference between the largest and smallest numbers |X1 - X2|

For (a) and (b), compute E(X).

Math   Statistics-And-Probability   
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Answer #1

so the expectation we get are a.91/72

b.105/36

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