At the beginning of a study, the researcher hypothesizes that there is no difference between the experimental and control groups. This is an example of a(n)
A) Type I error.
B) null hypothesis.
C) alternative hypothesis.
D) significant hypothesis.

Question

Quizplus · Accepted Answer

The statement "there is no difference between the experimental and control groups" represents the null hypothesis, which is the default assumption at the beginning of a study. A Type I error occurs when the null hypothesis is rejected when it is actually true. The alternative hypothesis proposes that there is a significant difference between the groups. The term "significant hypothesis" is not commonly used in statistics.

At the Beginning of a Study, the Researcher Hypothesizes That