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distribution: Value of 30 0.40 40 0.05 50 0.40 60...

Let be a random variable with the following probability distribution:

Value of

30 0.40

40 0.05

50 0.40

60 0.15

Find the expectation and variance of . (If necessary, consult a list of formulas.)

Value of

30 0.40

40 0.05

50 0.40

60 0.15

Find the expectation and variance of . (If necessary, consult a list of formulas.)

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