General Studies · Research Methodology
A researcher hypothesized that a given drug would adversely affect (increase) the reaction time. Forty subjects were tested before and after a prescribed drug dosage. The mean reaction time without the drug was 240 ms and with the drug was 210 ms. The mean difference was statistically significant. On the basis of this information, what can you conclude about the researcher's hypothesis?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The researcher's hypothesis is rejected because the reaction time decreased instead of increasing.✓
- 2The researcher's hypothesis is partially verified.
- 3The researcher's hypothesis is accepted.
- 4The data are inadequate to evaluate the researcher's hypothesis.
Correct answer
The researcher's hypothesis is rejected because the reaction time decreased instead of increasing.
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