Let X ,X ₁ X 2 , . . . , X ₁₁ X be a random sample from an n exponential distribution with density function Then the random variable B. Y= Which of the following is false A. X distribute chi-square with 2 degrees of freedom n 2.ΣΧ. X i=1 0 2 n X i=1 0 is a pivotal quantity C. None of the above

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