A medical researcher is studying the effects of a drug on blood pressure. Subjects in the study have their blood pressure taken at the beginning of the study. After being on the medication for 4 weeks, their blood pressure is taken again. The change in blood pressure is recorded and used in doing the hypothesis test.

Change: Final Blood Pressure - Initial Blood Pressure

The researcher wants to know if there is evidence that the drug reduces blood pressure. At the end of 4 weeks, 36 subjects in the study had an average change in blood pressure of -2.0 with a standard deviation of 4.5.

Find the p-value for the hypothesis test.