In a simple random sample of 1200 Americans age 20 and over, 138 of them were fou to have Type I diabetes. Round all answers to three decimal places. a) Report a 95% confidence interval for the proportion of all Americans age 20 and o with diabetes. b) According to the Centers for Disease Control and Prevention, nationally, 10.7% of a Americans age 20 and over have diabetes. Does the confidence interval you found support or refute this claim? Explain.

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