| Steps |
Key Sequence |
Screens |
| 1. Set up Stats Tests |
STAT |
 |
| |
 twice |
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| |
1 (for Z-Test...) |
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| 2. Select Stats |
once then ENTER |
 |
| 3. Input POPULATION mean |
 once, enter population mean, then ENTER |
 |
| 4. Input standard deviation of SAMPLE |
enter standard deviation of SAMPLE, then ENTER |
 |
| 5. Input SAMPLE mean |
enter SAMPLE mean, then ENTER |
 |
| 6. Input sample size |
enter sample size, then ENTER |
 |
| 7. Select appropriate test |
use right and left arrow keys to move cursor to appropriate test, then ENTER |
|
| 8. Calculate Z–Test |
once |
 |
| |
ENTER |
 |
| In this case, the test was H0: μ not equal to 128; the one–sample
z statistic is –1.09; the p–value is 0.275; the sample mean is 126.07 and the sample
size is 72. |
| 9. Draw the test |
repeat steps 1 through 8 (the data should already be stored!), then
once, then ENTER |
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