Question 1: According to the Center for Disease Control (CDC), 17.7% of children 6-11 years of age are obese. The parent-teacher association at one elementary school wants to find out if the obesity rate at their school is higher than the national average. They take a random sample from their school of 50 children between 6-11 years of age and found that 13 were obese. Use the hypothesis testing approach to answer the parent-teacher association's question.