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
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
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
![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 sufficient
i=1
statistic for o². Show all steps of your working.
ii. If u and o2 are both unknown, show that X (i.e. the sample mean) and
S (i.e. the sample variance) are jointly sufficient for u and o?.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F46579e0d-6345-4398-b17d-11e1102a56c8%2Fab860f69-200a-4142-a28c-b2a5bc55b41a%2Fhxl89j_processed.jpeg&w=3840&q=75)
Transcribed Image Text: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 sufficient
i=1
statistic for o². Show all steps of your working.
ii. If u and o2 are both unknown, show that X (i.e. the sample mean) and
S (i.e. the sample variance) are jointly sufficient for u and o?.
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