Texas Instruments TI-84 PLUS - Graphing Calculator Manual Book page 227

• The third is a alternative hypothesis, such as p1>p2 for the
>
To select an alternative hypothesis, move the cursor to the appropriate alternative, and then press
Í.
Selecting the Pooled Option
( and
Pooled 2-SampTTest
the calculation.
• Select if you do not want the variances pooled. Population variances can be unequal.
No
• Select if you want the variances pooled. Population variances are assumed to be equal.
Yes
To select the option, move the cursor to
Pooled
Selecting Calculate or Draw for a Hypothesis Test
After you have entered all arguments in an inferential stat editor for a hypothesis test, you must
select whether you want to see the calculated results on the home screen (
graph screen ( ).
Draw
• calculates the test results and displays the outputs on the home screen.
Calculate
• draws a graph of the test results and displays the test statistic and p-value with the
Draw
graph. The window variables are adjusted automatically to fit the graph.
To select or
Calculate Draw
The instruction is immediately executed.
Selecting Calculate for a Confidence Interval
After you have entered all arguments in an inferential stat editor for a confidence interval, select
to display the results. The
Calculate
When you press Í,
outputs on the home screen.
Bypassing the Inferential Stat Editors
To paste a hypothesis test or confidence interval instruction to the home screen without displaying
the corresponding inferential stat editor, select the instruction you want from the
Appendix A describes the input syntax for each hypothesis test and confidence interval instruction.
You can paste a hypothesis test or confidence interval instruction to a command line in a
Note:
program. From within the program editor, select the instruction from either the
(Chapter 15) or the
STAT TESTS
only) specifies whether the variances are to be pooled for
2-SampTInt
, move the cursor to either
option is not available.
Draw
calculates the confidence interval results and displays the
Calculate
menu.
Chapter 13: Inferential Statistics and Distributions
2-PropZTest
, and then press Í.
Yes
or
Calculate Draw
.
) or on the
Calculate
, and then press Í.
menu.
CATALOG
CATALOG
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