Find the expected value of x

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Reference no: EM132384301

A discrete random variable X has the probability distribution shown in the table: (All calculations must be on EXCEL)

x P(X=x)

1 3/8

2 1/8

3 1/4

4 1/4

(a) Find the expected value of X, E(X)

(b) The variance of X

Please show steps and calculations on excel.

Reference no: EM132384301

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