Answer
a. α = 0.1, df = 21-1 = 20
$t_{0.1,20}$ = -1.325
b. α = 1-0.025=0.975, df = 14-1 = 13
$t_{0.975,65}$ =2.16
c. α = 1-0.001 = 0.999, df = 45
$t_{0.999,45}$ = 3.281
d. α = 0.005, df = 37
$t_{0.995,23}$ = -2.715
Work Step by Step
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Introductory Statistics 9th Edition
by Mann, Prem S.
Published by
Wiley
ISBN 10:
1-11905-571-7
ISBN 13:
978-1-11905-571-6
Chapter 8 - Section 8.3 - Estimation of a Population Mean: σ Not Known - Exercises - Page 329: 8.33
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