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If X and Y Are Independent Random Variables Then the Standard

Question 51

Multiple Choice

If X and Y are independent random variables then the standard deviation of the random variable X - Y is given by which of the following expressions?


A) SD(X) - SD(Y)
B)
If X and Y are independent random variables then the standard deviation of the random variable X - Y is given by which of the following expressions? A) SD(X) - SD(Y) B) C) D) Var(X) + Var(Y) E) SD(X) + SD(Y)
C)
If X and Y are independent random variables then the standard deviation of the random variable X - Y is given by which of the following expressions? A) SD(X) - SD(Y) B) C) D) Var(X) + Var(Y) E) SD(X) + SD(Y)
D) Var(X) + Var(Y)
E) SD(X) + SD(Y)

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