Question: A random sample of 15 items is drawn from a population whose standard deviation is unknown. The sample mean is x = 760 and the

A random sample of 15 items is drawn from a population whose standard deviation is unknown. The sample mean is x = 760 and the sample standard deviation is s = 20. Use Appendix D to find the values of Student's t. (a) Construct an interval estimate of with 99% confidence.

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