Question: 1. X is a random variable with standard variance 5. Y is a random variable with standard variance 3. Z = EX|Y is a random

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1. X is a random variable with standard variance 5. Y isa random variable with standard variance 3. Z = EX|Y is a

X is a random variable with standard variance 5. Y is a random variable with standard variance 3. Z = EX|Y is a random variable with standard variance 4. What is EVar (X|Y )]? Hint: Use the variance decomposition formula as follows: Var(X) = EVar(X Y)] + Var(E[Y X]).What is the expected number of rolls of a fair die to get a number six

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