(Scenario III) The null hypothesis of the study described in Scenario III is:
A) caffeine will improve memory.
B) caffeine will impair memory.
C) caffeine will have no effect on memory.
D) caffeine may improve or impair memory.

Question

Quizplus · Accepted Answer

The null hypothesis in a study typically states that there is no effect or difference. In this case, stating that caffeine will have no effect on memory aligns with the concept of a null hypothesis, which is usually tested against an alternative hypothesis that suggests a specific effect or difference.

(Scenario III) the Null Hypothesis of the Study Described in Scenario