Xand y are independent random variables. x is normally distributed with mean 1 and variance 1. y is normally distributed with mean 3 and variance 5. what is the variance of y - 2x?

1

Step-by-step explanation:

Equation of variance:

Total Variance = sum (i=1, N) {c^2,variance^2}

= c1^2*variance1^2 + c2^2*variance2^2 +

Variance of X = 1

Variance of Y = 5

Variance of Y - 2X = (1^2)*(5) - (2^2)**(1)

= 5 - 4 = 1

you have to put the graph on here with the question

step-by-step explanation: