A researcher has a random sample of 100 observations on variable z which is distributed normally with
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Question:
A researcher has a random sample of 100 observations on variable z which is distributed normally with a mean of 15 and variance of 9. The sample average (zbar) is 16 and the sample variance is 8.What is the mean and variance of the sampling distribution of zbar?
The mean is 16 and its variance is 0.08
The mean is 16 and its variance is 8
The mean is 15 and its variance is 0.09
The mean is 15 and its variance is 9
Expert Answer:
Solution The correct option is Option C is correct The mean is 15 and its variance is 009 Given nsam... View the full answer
Related Book For 
Introduction To Probability And Statistics
ISBN: 9781133103752
14th Edition
Authors: William Mendenhall, Robert Beaver, Barbara Beaver
Posted Date:
