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Find the expectation and variance var

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Reference no: EM132464323

Let X be a random variable with the following probability distribution:

Value x of X                          P (X=x)

40 0.10

50 0.50     

60                                            0.10

70                                            0.30

Find the expectation E(X) and variance Var (X) of X.

E (x) =

Var (X)=

Reference no: EM132464323

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