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QUESTION 8 The random variable X has mean 3 and standard deviation 3. The random variable Y has mean -5 and standard deviation 2. The

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QUESTION 8 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 3X + 2Y? O a. -5 O b. -1 O c. O O d. 1

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