If the results of a study are not statistically significant and the sample size is large, then:
A)the result is very important
B)the result proves the null hypothesis
C)the research hypothesis is probably false
D)the result proves the research hypothesis

Question

Quizplus · Accepted Answer

If the results of a study are not statistically significant and the sample size is large, it suggests that the observed effect is likely due to chance variation, and the research hypothesis is probably false. A large sample size increases the power of the study, so if the result is still not significant, it implies that the effect is not large enough to be practically important or meaningful. The null hypothesis is not necessarily proven, but rather not rejected due to lack of strong evidence against it. Therefore, choice C is the correct response.

If the Results of a Study Are Not Statistically Significant