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Construct a confidence interval

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Reference no: EM131870232

A random sample of n measurements obtained from a normally distributed population yielded =­ 450 and s =­ 60. Construct a confidence interval for µ at the indicated level of confidence.

1. 80% confidence interval, n = 16

2. 90% confidence interval, n = 9

3. 90% confidence interval, n = 25

Reference no: EM131870232

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