I Homework Chapter 8 ( Section 8-1 - 8-5 ) Hyandona sample of 25 Hems is drawn from a population whose standard deviation is unknown . Thee Sample mean is JC = 850, and the sample standard deviation s s= 15. Use Appendix D to find the values of students t. "a ) Construct an, interval estimate of, u with 95to confidence .( Round your answers to 3 decimal places The 95% confidence interval is from I to ( b) Construct an interval estimate a with 95% confidence, assuming that S = 30. (Round your answers to 3 decimal places.) The 9510 confidence interval is from to 19 Construct an interval estimate fru with 951 10 Confidence, assuming that 5-60. (Round your answers to 3 decimal places. ) The 95 6 confidence interval is from ! Ho