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Let X be a random variable with the following probability distribution: Value x of X P=Xx...

Let X be a random variable with the following probability distribution: Value x of X P=Xx 1 0.15 2 0.55 3 0.05 4 0.15 5 0.10 Find the expectation EX and variance Var X of X .

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Answer #1

The probability distribution of X is:

The expected value of X is given by:

The variance of X is given by:

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