What is the distribution of X? What is the distribution of -2? What is the distribution of 2? What is the standard error of X?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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Suppose (X1, X2, ., X,) is a random sample from Normal(µ = 2,0² = 4²). Let X be the
sample mean of X1, X2, ..., X, and S² be the sample variance of X1,X2, ...,X9. For items
asking for the distribution of a statistic, do not forget to specify the parameters.
....
A. What is the distribution of X?
B. What is the distribution of -2?
C. What is the distribution of 2?
D. What is the standard error of X?
Transcribed Image Text:Suppose (X1, X2, ., X,) is a random sample from Normal(µ = 2,0² = 4²). Let X be the sample mean of X1, X2, ..., X, and S² be the sample variance of X1,X2, ...,X9. For items asking for the distribution of a statistic, do not forget to specify the parameters. .... A. What is the distribution of X? B. What is the distribution of -2? C. What is the distribution of 2? D. What is the standard error of X?
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