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BS Nursing Introduction To Biostatistics
nmdcat.online June 6, 2026

180. A medicinal study is testing a new drug for pain relief. The null hypothesis states that the mean pain reduction is zero (no effect). The alternative hypothesis states that the mean pain reduction is not zero (there is an effect). What technical type of hypothesis test is this?

A. One-tailed (right-tailed) test.
B. One-tailed (left-tailed) test.
C. Two-tailed test.
✓
D. Non-directional test.

📖 Additional Information

  • One-tailed (right-tailed) test.
  • One-tailed (left-tailed) test.
  • Two-tailed test.
  • Non-directional test.

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