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Chapter 14: Hypothesis Tests – Small Samples
619
Figure 14- 5
: Display of the Small Sample Test for a Single
Population Mean workbook output for
Example14-2
(b) Left –tailed (one-tailed) Test
:
0
(where
0
is a specified mean value)
:
<
0
:
t
=
( ̅
) ( √ ⁄ )
⁄
for
unknown and
< 30
: For a specified significance level
, reject the null hypothesis
if the computed test statistic value
is smaller than -
.
Conclusion
: ……….
Note:
This is a left-tailed test because the direction of the inequality sign in
the alternative hypothesis is to the left.
Click here for the Small Sample Test for a Single Population Mean Workbook