1. (a) Let X{X1, X2, , Xn} be a random sample from a normal distribution....with mcan u and variance o.i. If u is known and o? is unknown, show that (X, -p)² is a sufficienti=1statistic for o². Show all steps of your working.ii. If u and o2 are both unknown, show that X (i.e. the sample mean) andS (i.e. the sample variance) are jointly sufficient for u and o?.

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Answered: i. If u is known and o? is unknown,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Just need B. These are old practice problems
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i. If u is known and o? is unknown, show that (X,-p)² is a sufficient i=1 statistic for o². Show all steps of your working. and o? are both unknown, show that X (i.e. the sample mean) and S (i.e. the sample variance) are jointly sufficient for u and o². ii. If