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22. Suppose X has a mean of 100 and variance of 49 and standard deviation of 7. Suppose Y has a mean of 150 and

22. Suppose X has a mean of 100 and variance of 49 and standard deviation of 7. Suppose Y has a mean of 150 and variance of 64 and standard deviation of 8. Assume X and Y are independent. a. What is the mean of X + Y? b. What is the mean of X - Y? c. What is the variance of X + Y? d. What is the variance of X - Y? e. What is the variance of Y - X? f. What is the standard deviation of X + Y? g. What is the standard deviation of X - Y? h. What is the standard deviation Y - X

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