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level 0.98? 3. Let X1, . . ., Xm and Y1, . .., Yn be independent random samples from, respectively, a normal Nu, 2)-distribution and

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level 0.98? 3. Let X1, . . ., Xm and Y1, . .., Yn be independent random samples from, respectively, a normal Nu, 2)-distribution and a normal N(v, 02)-distribution. Determine a confidence interval for u - v of confidence level 1 - a (i) if of is known, (ii) if of is unknown. sonsbilnoo ion Determi

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