Suppose you wanted to see if there was a difference between the participants in the control group and the experimental group for the pre-test and the post-test data. What is the correct expression for the test results?
A) U = 506, z = -0.830, p = .406 and U = 269.5, z = -2.682, p = .007
B) U = -0.830, z = 394, p = .406 and U = -2.682, z = 269.5, p = .007
C) U = 0.406, z = -0.830, p = 394 and U = 0.007, z = -2.682, p = 269.5
D) U = 394, z = 0.406, p = -.830 and U = 269.5, z = 0.007, p = -2.682

Question

Quizplus · Accepted Answer

The correct expression for the test results should include the U statistic, z-score, and p-value for both the pre-test and post-test data. Option A provides these values in the correct format, with U = 506, z = -0.830, and p = .406 for the pre-test data, and U = 269.5, z = -2.682, and p = .007 for the post-test data. Option B and C have the values in the wrong order, and option D has incorrect expressions for the statistics. Therefore, option A is the best choice.

Suppose You Wanted to See If There Was a Difference