A result is considered statistically significant when
A)the sample score is so extreme that the research hypothesis is rejected.
B)the sample score is so extreme that the null hypothesis is rejected.
C)the population mean is so extreme that the research hypothesis is rejected.
D)the population mean is so extreme that the null hypothesis is rejected.

Question

Quizplus · Accepted Answer

Statistical significance is achieved when the sample score is so extreme that the null hypothesis (the hypothesis that there is no significant difference between groups or conditions being tested) is rejected at a predetermined level of probability or p-value (usually p<0.05 or p<0.01). This indicates that the results are unlikely to have occurred by chance and can be generalized to the population. The research hypothesis is the proposed explanation for the observed effect, and rejecting the null hypothesis supports the research hypothesis.

A Result Is Considered Statistically Significant When