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Calculating a t-test for $\mu_1-\mu_2$

1. [STAT]
2. [TESTS]
3. [2-SampTTest]. [ENTER].
4. Choose [DATA] or [STATS]. [ENTER].
5. Input the list names or summary statistics, and the type of alternative hypothesis (two-tailed $\mu_1 \neq \mu_2$, left-tailed $\mu_1<\mu_2$, or right-tailed $\mu_1>\mu_2$).
6. Choose [Pooled]: YES or NO. [ENTER].
7. Arrow down to [Calculate] or [Draw]. [ENTER].