A researcher found a statistically significant one point difference in mean ACT scores between students who studied on their own and those who attended a professional test-taking seminar.The researcher can conclude that
A) the means for the groups are statistically different from each other.
B) the professional training seminar produces considerably better ACT scores.
C) professional training is necessary for better ACT scores.
D) None of these is true.

Question

Quizplus · Accepted Answer

The researcher is able to conclude that there is a statistically significant difference in mean ACT scores between the two groups. However, the one point difference may not necessarily indicate a considerable or necessary advantage for attending the professional test-taking seminar. Therefore, options B and C are not necessarily true. Only option A is supported by the research findings.

A Researcher Found a Statistically Significant One Point Difference in Mean