1. Suppose that a researcher is interested in comparing two therapies to see if there are any differences in outcomes between the two. The researcher wants to sample two separate groups of individual, randomly placing each person into one of the two therapies. Answer each of the following questions.

a. What is the null and alternative hypothesis most appropriate for this question?

b. What statistical test should you use?

c. Suppose the results of your statistical test yielded a p value of 0.025. Assuming an alpha of 0.01, what decision should you make?

2. Suppose that a clinician is comparing the effectives of medication on reducing schizophrenia symptoms. They decide to measure the relevant schizophrenia symptoms before delivering the medication and then again afterwards. Answer each of the following questions.

a. What is the null and alternative hypothesis most appropriate for this question?

b. What statistical test should be you use?

c. Suppose the results of your statistical test yielded a p value of 0.04. Assuming an alpha of 0.05, what decision should you make?

3. Identify one issue with each of the following graphs that could make it deceptive to the reader.