Suppose an experimenter established a 95 percent confidence interval about the difference between two sample means and found values of -1.35 and +1.35. The null hypothesis should be
A) rejected at the .05 level
B) rejected at the .01 level
C) rejected, but more information is necessary before a particular level can be chosen
D) retained.

Question

Quizplus · Accepted Answer

The confidence interval includes 0, indicating that the difference between the two sample means could be 0. This suggests that there is not enough evidence to reject the null hypothesis at the .05 level.

Suppose an Experimenter Established a 95 Percent Confidence Interval About