In which of the following would an increase from a smaller number to a larger number produce a more powerful statistical test?
A) actual difference between population means
B) alpha
C) both of the descriptive alternatives are correct
D) neither of the descriptive alternatives is correct.

Question

Quizplus · Accepted Answer

An increase in the actual difference between population means would lead to a more powerful statistical test because it would make the effect size larger, making it easier to detect a true effect. Similarly, increasing alpha (the significance level) would also make a statistical test more powerful by increasing the likelihood of rejecting the null hypothesis, albeit at the cost of potentially increasing the Type I error rate. Therefore, both A and B are correct.

In Which of the Following Would an Increase from a Smaller