Question: You are told that (X) = 8 and var (X) = 4. What are the expected values and variances of the following expressions? a. Y

You are told that £(X) = 8 and var (X) = 4. What are the expected values and variances of the following expressions?
a. Y = 3X + 2
b. Y = 0.6X - 4
c. Y = X/4
d. Y = aX + b, where a and b are constants
e. Y = 3X2 + 2
How would you express these formulas verbally?

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a EY E3X 2 3 EX 2 26 var Y var 3X 2 9 var X 36 b EY E 06X 4 06 EX 4 08 var ... View full answer

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