MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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A simple random sample of size \( n = 19 \) is drawn from a population that is normally distributed with \( \sigma = 21 \). The sample mean is found to be \( \bar{x} = 65 \).

Construct a 90% confidence interval for the population mean. Round your answers to two decimal places.

Confidence interval: [  \_\_\_ ,  \_\_\_  ]
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Transcribed Image Text:A simple random sample of size \( n = 19 \) is drawn from a population that is normally distributed with \( \sigma = 21 \). The sample mean is found to be \( \bar{x} = 65 \). Construct a 90% confidence interval for the population mean. Round your answers to two decimal places. Confidence interval: [ \_\_\_ , \_\_\_ ]
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