The following data presents test scores on a Behavioral Vignettes Test for self-help skill teaching for the primary parents of a random sample of families with mentall retarded children before and after a training program
Before 7 6 10 16 8 13 8 14
After 11 14 16 17 9 15 9 17
Based on the information, can you conclude that the training program is effective? Use the significance level of 0.05. State your assumption I need a clear detailed explanation of this answer. I want to understand the result.