- One-tailed (right-tailed) test.
- One-tailed (left-tailed) test.
- Two-tailed test.
- Directional test.
200. A medicinal study is testing a new drug for pain relief. The null hypothesis states that the new drug has no effect. The alternative hypothesis states that the new drug has an effect (either increases or decreases pain relief). What technical type of hypothesis test is this?
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