4. Alternative Medicine Use. A study examined the prevalence of alternative medicine usage by age group among persons with diabetes.¹⁰ In the study, 5.7% of the subjects were ages 18–34 years, 20.7% were ages 35–49 years, 38.8% were ages 50–64 years, and 34.8% were age 65 or older. Suppose that a study conducted this year found that, of the 1000 randomly selected respondents with diabetes, 70 were 18–34 years old, 220 were 35–49 years old, 440 were 50–64 years old, and 270 were over age 65. Test, using level of significance , whether the proportions have changed.