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Hypertension is when an adult is classified as having high blood pressure (above 130 systolic blood pressure is considered hypertension). Researchers want to know the proportion of adult North Americans (above age of 18) that have hypertension. Based on a study of 3532 adult North Americans, 1219 of them were classified as having hypertension.

a. Based on the sample, what is the estimate of the proportion of adults who have hypertension?

Round to the nearest 3rd decimal place, 0.xxx

b. Create a 95% confidence interval for the true proportion of adult North Americans that have hypertension.

What is the UPPER limit of the confidence interval?

Round to the nearest 3rd decimal place, 0.xxx