Suppose that X is a random variable where E(X)=4 and Var(X)=8. What are the expected values and
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Question:
Suppose that X is a random variable where E(X)=4 and Var(X)=8. What are the expected values and variances for each of the following expressions?
a) Y=X-4 (for your own understanding draw out what happens to the X distribution when you subtract 4, a before and after picture, not graded)
b) Y=6X ((for your own understanding draw out what happens to the X distribution when you multiply it by 6, a before and after picture, not graded)
c) Y=X/6
Expert Answer:
a YX4 When we subtract 4 from every value in a random variables distribution we shift the entire dis... View the full answer
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