If a 95 percent confidence interval about a difference between means is -2.31 to 24.62, the null hypothesis may be
A) rejected at the .01 level
B) rejected at the .05 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, which means the difference between means could be 0, indicating no significant difference. Therefore, the null hypothesis cannot be rejected based on this interval.

If a 95 Percent Confidence Interval About a Difference Between