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Expiam, without huing the 93% confidence interval. The interval would benarrower because less confidence means a smaller margin of error. 52. We would like to know: "What percentage of college students read the college newspaper every day?" In a random sample of students, 52% of them said they read the college ervatewspaper every day. The survey has a margin of error of ± 4%. 65 a. Construct a 95% confidence interval for the proportion of college students who read the newspaper every day. b. Explain in words what this interval tells us. c. The editor of the campus newspaper claims that more than half the students read the newspaper every day. Is his claim correct? Explain. 53. An automobile dealer would like to estimate the proportion of customers who still own the same cars they purchased five years earlier. A random sample of 300 customers selected from the dealer's records indicated that 165 still owned the cars that had been purchased fiv earlier. 55 1-x p-n years a. Give a point estimate for the proportion. b. If it is desired to find a confidence interval for the population proportion p, which functic in your calculator is appropriate for this problem? 1-plop zint

Expiam, without huing the 93% confidence interval. The interval would benarrower because less confidence means a smaller margin of error. 52. We would like to know: "What percentage of college students read the college newspaper every day?" In a random sample of students, 52% of them said they read the college ervatewspaper every day. The survey has a margin of error of ± 4%. 65 a. Construct a 95% confidence interval for the proportion of college students who read the newspaper every day. b. Explain in words what this interval tells us. c. The editor of the campus newspaper claims that more than half the students read the newspaper every day. Is his claim correct? Explain. 53. An automobile dealer would like to estimate the proportion of customers who still own the same cars they purchased five years earlier. A random sample of 300 customers selected from the dealer's records indicated that 165 still owned the cars that had been purchased fiv earlier. 55 1-x p-n years a. Give a point estimate for the proportion. b. If it is desired to find a confidence interval for the population proportion p, which functic in your calculator is appropriate for this problem? 1-plop zint

MATLAB: An Introduction with Applications
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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Explam, without finding the 95% confidence interval. The interval would benarrower because less confidence means a smaller margin of error. 52. We would like to know: "What percentage of college students read the college newspaper every day?" In a random sample of students, 52% of them said they read the college newspaper every day. The survey has a margin of error of ± 4%. terval a. Construct a 95% confidence interval for the proportion of college students who read the newspaper every day. b. Explain in words what this interval tells us. 65 c. The editor of the campus newspaper claims that more than half the students read the newspaper every day. Is his claim correct? Explain. 53. An automobile dealer would like to estimate the proportion of customers who still own the same cars they purchased five years earlier. A random sample of 300 customers selected from the dealer's records indicated that 165 still owned the cars that had been purchased fiv earlier. years a. Give a point estimate for the proportion. 55 X b=² p- b. If it is desired to find a confidence interval for the population proportion p, which functic in your calculator is appropriate for this problem? -prop zint
Transcribed Image Text:Explam, without finding the 95% confidence interval. The interval would benarrower because less confidence means a smaller margin of error. 52. We would like to know: "What percentage of college students read the college newspaper every day?" In a random sample of students, 52% of them said they read the college newspaper every day. The survey has a margin of error of ± 4%. terval a. Construct a 95% confidence interval for the proportion of college students who read the newspaper every day. b. Explain in words what this interval tells us. 65 c. The editor of the campus newspaper claims that more than half the students read the newspaper every day. Is his claim correct? Explain. 53. An automobile dealer would like to estimate the proportion of customers who still own the same cars they purchased five years earlier. A random sample of 300 customers selected from the dealer's records indicated that 165 still owned the cars that had been purchased fiv earlier. years a. Give a point estimate for the proportion. 55 X b=² p- b. If it is desired to find a confidence interval for the population proportion p, which functic in your calculator is appropriate for this problem? -prop zint
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