Question: A random sample of 25 Items is drawn from a population whose standard deviation is unknown. The sample mean is = = 850 and the

A random sample of 25 Items is drawn from a population whose standard deviation is unknown. The sample mean is = = 850 and the sample standard deviation is s = 15. Use Appendix D to find the values of Student's t (a) Construct an interval estimate of / with 95% confidence. (Round your answers to 3 decimal places.) The 95% confidence interval is from fences (b) Construct an interval estimate of / with 95% confidence. assuming that s - 30. (Round your answers to 3 decimal places.) The 95% confidence interval is from (e) Construct an interval estimate of / with 95% confidence, assuming that's - 60. (Round your answers to 3 decimal places.) The $5% confidence interval is from

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