In a simple random sample of 600 young people, 85% had earned a high school diploma. Complete the following parts (Round all answers to 2 decimal places.) a) What is the standard error for this estimate of the percentage of all young people who earned a high school diploma? (as a percentage). Answer: 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. (as a percentage). Answer: c) Find the 95% confidence interval for the percentage of all young people who earned a high school diploma. Answer: % to d) Suppose that in the past, 80.63% 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. Answer: O The interval supports this claim. This is because 80.63% is not in the interval, and all values are above 80.63%. O The interval does not support this claim. This is because 80.63% is not in the interval, and all values are above 80.63%. O The interval does not support this claim Thin 00 (2 0
In a simple random sample of 600 young people, 85% had earned a high school diploma. Complete the following parts (Round all answers to 2 decimal places.) a) What is the standard error for this estimate of the percentage of all young people who earned a high school diploma? (as a percentage). Answer: 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. (as a percentage). Answer: c) Find the 95% confidence interval for the percentage of all young people who earned a high school diploma. Answer: % to d) Suppose that in the past, 80.63% 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. Answer: O The interval supports this claim. This is because 80.63% is not in the interval, and all values are above 80.63%. O The interval does not support this claim. This is because 80.63% is not in the interval, and all values are above 80.63%. O The interval does not support this claim Thin 00 (2 0
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:In a simple random sample of 600 young people, 85% had earned a high school diploma. Cormplete the
following parts (Round all answers to 2 decimal places.)
a) What is the standard error for this estimate of the percentage of all young people who earned a high
school diploma? (as a percentage). Answer:
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. (as a percentage).
Answer:
c) Find the 95% confidence interval for the percentage of all young people who earned a high school
diploma.
Answer:
% to
d) Suppose that in the past, 80.63% 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.
Answer:
O The interval supports this claim. This is because 80.63% is not in the interval, and all values are
above 80.63%.
O The interval does not support this claim. This is because 80.63% is not in the interval, and all values
are above 80.63%.
O The interval does not support this claim. This is because 80.63% is in the interval.
O The interval supports this claim. This is because 80.63% is in the interval.
06
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