芳纶材料:X is a random variable with E(x) = 1.5 and σ = 0.8,E(7-4X+2X^2) =_______(specify with 2 digits)

X is a random variable with E(x) = 1.5 and σ = 0.8,E(7-4X+2X^2) =_______(specify with 2 digits) X is the value of A for B When X is a normally distributed population, what kind population do we have? What is generation-x? god is a girl What is a process? life is a game gad is a girl it is a truth what is a countersignature