Complete parts (a) through (c) below.
(a) Determine the critical value(s) for a right-tailed test of a population mean at the level of significance with
degrees of freedom.
a = 0.05 20
(b) Determine the critical value(s) for a left-tailed test of a population mean at the level of significance based on a
sample size of n .
a = 0.05
= 15
(c) Determine the critical value(s) for a two-tailed test of a population mean at the level of significance based on a
sample size of n .
a = 0.10
= 18
Click here to view the t-Distribution Area in Right Tail.