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1. What is the moment generating function of a normal random variable? 2. What is the difference between the standard normal distribution and a general

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1. What is the moment generating function of a normal random variable? 2. What is the difference between the standard normal distribution and a general normal distribution? 3. Can the cdf for a distribution of the mixed type include discrete distribution? Explain the reason. 1. What are the two properties of joint probability mass function 5 of X and Y? 2. When two random variables X and Y are independent? 3. What is the mathematical expectation of u(X1,X2)

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