Mathematics, 07.04.2020 19:53 hairyears3394
In a simple random sample of 14001400 young people, 9090% had earned a high school diploma. Complete parts a through d below. a. What is the standard error for this estimate of the percentage of all young people who earned a high school diploma? nothing (Round to four decimal places as needed.) b. Find the margin of error, using a 95% confidence level, for estimating the percentage of all young people who earned a high school diploma. nothing% (Round to one decimal place as needed.) c. Report the 95% confidence interval for the percentage of all young people who earned a high school diploma. (nothing % comma nothing % )%,% (Round to one decimal place as needed.) d. Suppose that in the past, 80% of all young people earned high school diplomas. Does the confidence interval you found in part c support or refute the claim that the percentage of young people who earn high school diplomas has increased? Explain.
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In a simple random sample of 14001400 young people, 9090% had earned a high school diploma. Complete...
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