X D2L. 8-3 Homework: Chapter 8 (Section X Question 6 - 8-3 Homework: Cha X 2.3 Sampling Concepts x V ezto.mheducation.com/ext/map/index.html?_con=con&external_browser=0&launchUrl=https%253A%252F%252Fnewconnect.mheducation.com%252F#/activity/question-group/kEZASsBkEPvJwJa... LE 8-3 Homework: Chapter 8 (Sections 8.1 through 8.5) i Saved Help Save & Exit Submit Check my work A random sample of 21 items is drawn from a population whose standard deviation is unknown. The sample mean is = 750 and the sample standard deviation is s= 10. Use Appendix D to find the values of Student's t. (a) Construct an interval estimate of u with 98% confidence. (Round your answers to 3 decimal places.) points The 98% confidence interval is from eBook Ask Print References (b) Construct an interval estimate of u with 98% confidence, assuming that s = 20. (Round your answers to 3 decimal places.) The 98% confidence interval is from (c) Construct an interval estimate of / with 98% confidence, assuming that s = 40. (Round your answers to 3 decimal places.) The 98% confidence interval is from