mattqualls8412 mattqualls8412 08-04-2024 Mathematics contestada If a random variable X has the PDF f(x) = (1/2) * √ (2 * pi) * e⁽⁻⁽ˣ⁺⁵⁾² / 8), then a. What is E(X) and Var(X)? b. What is P(X > 7)?