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Mathematics, 10.07.2019 05:40 queenkalah101

Arandom variable x takes four possible values, 0, 2, a, and b, where a and b are unknown numbers. if pr[x = 0] = 0.2, pr[x=2] = 0.4, pr[x = a] = 0.3, e[x] = 2.8 and it is the case that a + b = 6, what is the missing value of a ? a.-1.0 b.5.0 c.7.0 d. cannot be determined without more information e. none of the above

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Arandom variable x takes four possible values, 0, 2, a, and b, where a and b are unknown numbers. if...
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