Question: 1. The distribution function for the duration of a certain soap opera (in tens of hours) is F (x) = 1

1. The distribution function for the duration of a certain soap opera (in tens of hours) is F (x) =    1 − 16 x2 if x ≥ 4 0 if x < 4.

(a) Find E(X).

(b) Show that Var(X) does not exist.

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