Steps |
Key Sequence |
Screens |
1. Enter data into list, L1 |
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2. Enter data into list, L2 |
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3. Set up Stats Tests |
STAT |
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twice |
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0 (for 2–SampTInt...) |
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4. Select Data |
use left arrow key (if necessary) to move cursor to Data, then ENTER |
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5. Select list, L1 |
(press ALPHA), then 2nd, then 1, then ENTER |
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6. Select list, L2 |
(press ALPHA), then 2nd, then 2, then ENTER |
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7. Input confidence level |
twice, enter confidence level (AS DECIMAL), then ENTER |
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8. Enter no for Pooled |
use left arrow key (if necessary) to move cursor to No, then ENTER |
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9. Calculate CI |
once, ENTER |
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10. Scroll down to find more calculations |
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In this case the 90% CI is 3.9676 to 9.1157. |