anonymous
  • anonymous
i have a probability question . two dices are tossed once. let the random variable be t he sum of the up faces on the dice. A). find and graph the probability distribution of the random variable. and b) calculate the mean (or expectation) of this distribution
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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dumbcow
  • dumbcow
there are 36 possibilities so prob = 1/36 sum can be 2,3...,12 1 way to get 2 and 12 --> p = 1/36 2 ways to get 3 and 11 -->p = 2/36 3 ways to get 4 and 10 --> p=3/36 4 ways to get 5 and 9 --> p = 4/36 5 ways to get 6 and 8 --> p=5/36 6 ways to get 7 --> p =6/36 E = 7

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