Rose is sure that any significant differences in her reading intervention study will favor those children who were in her treatment condition. She therefore will not consider rejecting the null hypothesis that the groups are different in favor of her control condition. Rose will then
A) use a non-parametric test of significance.
B) apply a two-tailed test of significance.
C) apply a one-tailed test of significance.
D) use descriptive findings only to examine her data.

Question

Quizplus · Accepted Answer

Since Rose is specifically interested in finding differences that will favor her treatment condition, it is appropriate to use a one-tailed test of significance rather than a two-tailed test. This will allow her to determine whether the data support her hypothesis that the treatment group is superior to the control group. Using a non-parametric test of significance or relying solely on descriptive findings may not provide sufficient statistical power to make a definitive conclusion about the differences between the groups.

Rose Is Sure That Any Significant Differences in Her Reading