I'm not very good with numbers as it is. I have this assignment and I have done all but one problem. It deals with hypothesis testing....and for some reason its completely over my head. My instructor is out of town for the week and cant help.I just dont understand this...Desperate help is needed. Here is the question:

A sample of 55 withdrawn schizophrenic adolescents was studied to determine if art therapy significantly decreases hallucinations. The level of significance was set at 0.05. The results of the study indicated that hallucinations after art therapy decreased from a mean score of 5.0 to 3.0 with a probability of .002

Set up the research process using the above data, omitting the specific test statistic and calculations. Using Word, draw the normal curve which represents the problem and submit it through e-mail. (10 pts.)