A normally distributed population has a sample size of 150 which is obtained from a population with sample mean 125. It said to have a standard deviation of 50. Which among the statements is correct? We are 90% confident that the true population mean lies between 121 and 144. We are 90% confident that the true population mean lies between 117 and 133. OWe are 95% confident that the true population mean lies between 121 and 144. We are 95% confident that the true population mean lies between 117 and 133.

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
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A normally distributed population
has a sample size of 150 which is
obtained from a population with
sample mean 125. It said to have a
standard deviation of 50. Which
among the statements is correct?
We are 90% confident that the true
population mean lies between 121
and 144.
We are 90% confident that the true
population mean lies between 117
and 133.
OWe are 95% confident that the true
population mean lies between 121
and 144.
We are 95% confident that the true
population mean lies between 117
and 133.
Transcribed Image Text:A normally distributed population has a sample size of 150 which is obtained from a population with sample mean 125. It said to have a standard deviation of 50. Which among the statements is correct? We are 90% confident that the true population mean lies between 121 and 144. We are 90% confident that the true population mean lies between 117 and 133. OWe are 95% confident that the true population mean lies between 121 and 144. We are 95% confident that the true population mean lies between 117 and 133.
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