People are considered obese when they are approximately 30 lbs over their healthy weight. Obesity can increase the risk of heart disease and diabetes, which could add to the cost of the health care system. Two random samples of adults were selected. The individuals in one of the samples lacked high school diplomas. The individuals in the other sample held college degrees. The number of people sampled and the obese individuals from each sample are as follows:

No High School Diploma College Degree x1 = 70 x2 = 37 n1 = 205 n2 = 180

a. Perform a hypothesis test using a = 0.05 to determine if the proportion of obese individuals without high school diplomas differs from the proportion of obese individuals who have college degrees.

b. Determine the p-value and interpret the results.

c. Verify your results using PHStat.

AppendixLO1