Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions :

-Which of the following conditions would best support the conclusion that the results of the study are statistically significant?

A) Analyses show that r = +0.5, meaning that the differences in the group means are unlikely to be due to chance.
B) The members of the experimental group and the control group took the test under virtually identical conditions.
C) There is a very high probability that a subject who took the test again under the same conditions would get roughly the same score.
D) There is only a very low probability that the random assignment of subjects resulted in control and experimental groups with differences in potential performance.