| Steps |
Key Sequence |
Screens |
| 1. Set up Stats Tests |
STAT |
 |
| |
 twice |
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| |
0 (for 2–SampTInt...) |
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| 2. Select Stats for Input |
once (if necessary), then ENTER |
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| 3. Input mean of SAMPLE |
 once, enter mean of SAMPLE1, then ENTER |
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| 4. Input standard deviation |
enter standard devation of SAMPLE1, then ENTER |
 |
| 5. Input sample size |
enter sample size of SAMPLE1, then ENTER |
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| 6. Input mean of SAMPLE |
enter mean of SAMPLE2, then ENTER |
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| 7. Input standard deviation |
enter standard devation of SAMPLE2, then ENTER |
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| 8. Input sample size |
enter sample size of SAMPLE2, then ENTER |
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| 9. Input confidence level |
enter confidence level (AS DECIMAL), then ENTER |
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| 10. Enter no for Pooled |
press ENTER on No |
|
| 11. Calculate CI |
once, ENTER |
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| 12. Scroll down to find more calculations |
Press |
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| In this case the 95% CI is –12.28 to 27.083. |