A random sample of n measurements obtained from a normally


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

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Basic Statistics: A random sample of n measurements obtained from a normally
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