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Answer to Question #331348 in Statistics and Probability for Jam

Question #331348

INTERVAL ESTIMATE

4. Suppose that the amount of time spend by working student weekly is normally distributed with the standard deviation of 25 minutes. A random sample of 125 observations is drawn and the sample mean is computed as 150 minutes. Determine the 95% confidence interval estimate of the population mean.



1
Expert's answer
2022-04-24T17:30:57-0400

"CI=\\mu \\plusmn z \\sigma\/\\sqrt{n}=150 \\plusmn 1.96x25\/\\sqrt{125}=150 \\plusmn 4.38"


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