JMP Tutorial:
One Sample t Test


Click the link below and save the following JMP file to your Desktop:

Now go to your Desktop and double click on the JMP file you just downloaded.
This action will start JMP and display the content of this file:

Click the Analyze menu, then select Distribution.
Click the Pretest column, then click Y, columns.
Click OK.
The 95% confidence interval for the mean is displayed under Summary Statistics.

If you want to produce, for example, a 90% confidence interval for the mean, click the red down arrow next to Pretest, select Confidence Interval, select 0.90.


You should see the following:

Hypothesis Testing

Click on the red down arrow next to Pretest and select Test Mean:
You should see:

Suppose your Null Hypothesis is that the mean is 30.  Type 30 in the Specify Hypothesized Mean text box and click OK.

Prob>|t| =  .0077 is the p-value for HA: μ ≠ 30
Prob>t  =  .9961 is the p-value for HA: μ > 30
Prob<t =  .0039 is the p-value for HA: μ < 30