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.
Your answer should be rounded to 4 decimal places