For each value of ν (degrees of freedom) look up the value of Student’s t in Appendix D for the stated level of confidence. Then use Excel to find the value of Student’s t to four decimal places. Which method (Appendix D or Excel) do you prefer, and why?
a. ν = 9, 95 percent confidence
b. ν = 15, 98 percent confidence
c. ν = 47, 90 percent confidence
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