Question: 2.4. Let Z be a discrete random variable having possible values 0, 1, 2, and 3 and probability mass function (a) Plot the corresponding distribution

2.4. Let Z be a discrete random variable having possible values 0, 1, 2, and 3 and probability mass functionP(0)= p(1) = 1, p(2) = 1, p(3)=1.

(a) Plot the corresponding distribution function.

(b) Determine the mean E[Z].

(c) Evaluate the variance Var[Z].

P(0)= p(1) = 1, p(2) = 1, p(3)=1.

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