= Quiz: Quiz 5 - 7.4, 8.1, 8.... Question 4 of 7 This quiz: 10 point(s) possible This question: 2 point(s) possible Submit quiz In a simple random sample of 800 people age 20 and over in a certain country, the proportion with a certain disease was found to be 0.145 (or 14.5%). Complete parts (a) through (d) below. b. Find the margin of error, using a 95% confidence level, for estimating this proportion. m = (Round to three decimal places as needed.) c. Report the 95% confidence interval for the proportion of all people in the country age 20 and over with the disease. The 95% confidence interval for the proportion is (D (Round to three decimal places as needed.) d. According to a government agency, nationally, 15.7% of all people in the country age 20 or over have the disease. Does the confidence interval you found in part (c) support or refute this claim? Explain. X More Textbook Statcrunch Time Remaining: 01:48:34 Next Next