Question: 7 Due: 11:59pm, Friday, March 8. Instruction: Please scan or typeset your solutions and upload them as a single pdf file to Canvas. Do not

7 Due: 11:59pm, Friday, March 8. Instruction: Please scan or typeset your solutions and upload them as a single pdf file to Canvas. Do not just take a picture of your solutions. Readings: Chapter 6 and Chapter 7 1. Let X1, . . . , Xn iid N (, 2), and Xn = 1 n(X1 Xn) = 1 n n i=1 Xi (a) Find E( Xn) (b) Find var( Xn) and sd( Xn)

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