Question: The random variable x has mean 3 and standard deviation 3. The random variable Y has mean -5 and standard deviation 2. The two random

The random variable x has mean 3 and standard deviation 3. The random variable Y has mean -5 and standard deviation 2. The two random variables are independent. Use this information to answer Questions 8 to 11 below. What is the mean of 2x+Y? a.o @ 6.5 0.5 d. What is the standard deviation of 2Y-X? D a. 5 b.8.34 O c. 11.31 O d. 16.49 Let o be the standard deviation of 4X, and o2 be the standard deviation of 2Y. Which of the following is true? @ a. None of the above is always true. O 6.01 - 02 c.01

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