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Let X1, ..., Xn be a random sample from the exponential distribution with density function being f(x) = ex , where is positive and unknown

Let X1, ..., Xn be a random sample from the exponential distribution with density function being f(x) = ex , where is positive and unknown and n is large enough (n 30).Please derive the 100(1)% confidence interval for , using the pivotal quantity method

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