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Need help with simple mathematic statistics question. Problem 7.1. Let Y1, Y2, . . . , Y be a random sample from the exponential distribution

Need help with simple mathematic statistics question.

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Problem 7.1. Let Y1, Y2, . . . , Y be a random sample from the exponential distribution wii parameter 1* > 0. 1. Whatis the distribution ofU = Elsi? ls ita pivotal quantity? 2. Construct a 95%-candence interval for 1* when n = 2 and the observed values of Y1 and K; are 0.4 and 0.1

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