Let X1, X2,...,X3 denote a random sample from a population having mean u and variance o2. 302 Which of the estimators have a variance of ? 2 X1+X2++X7 7 %D *x+9x-Ix 2 3X1-X3+X4 2 2(X1+X2+…+X7) 7

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A: Give the steps how to find the area under the normal distribution. Given P(-0.3&gt;x&gt;0.71).

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A: Given that alpha= 0.04 , M.E =0.03

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Q: Find the probability distribution for the given random variable. (Round all probabilities to four…

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A: Introduction: We have used Excel as our software of choice.

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Q: () = ("; ')-(,",) Q1. Show that : %D

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A: The formula to find the confidence interval is given below: x¯±tα2,N-1sn