When a given difference is determined to be "significant", then
A) the alpha level must have failed
B) the alpha level must have been rejected
C) the null hypothesis must have been rejected
D) there was a failure to reject the null hypothesis

Question

Quizplus · Accepted Answer

When a difference is determined to be "significant," it means that the null hypothesis (which assumes no difference exists) was rejected based on the results of the statistical significance test. Therefore, choice C is the correct answer. Choices A, B, and D are incorrect because they do not accurately reflect the meaning of a significant difference in statistical hypothesis testing.

When a Given Difference Is Determined to Be "Significant", Then