You are considering testing a new drug that is supposed to facilitate learning in mentally retarded children. Because there is relatively little known about the drug, you plan to use a nondirectional alternative hypothesis. Since your resources are limited, you can test only 20 subjects. The subjects will be run in a repeated measures design and the data will be analyzed with the sign test, using a = 0.05_{2 tail}. What is the power this time? A) 0.4163 B) 0.2969 C) 0.6161 D) 0.2458

Question

Quizplus · Accepted Answer

The power of the sign test with n = 20 and a = 0.05_{2 tail} is 0.4163.

You Are Considering Testing a New Drug That Is Supposed