Question: A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean isx= 820 and the sample standard

A random sample of 23 items is drawn from a population whose standard deviation is unknown. The sample mean isx= 820 and the sample standard deviation iss= 25.

Construct an interval estimate ofwith 99% confidence.

The 99% confidence interval is fromto

Construct an interval estimate ofwith 99% confidence, assuming thats= 50.

The 99% confidence interval is fromto

Construct an interval estimate ofwith 99% confidence, assuming thats= 100.

The 99% confidence interval is fromto

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