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Political pundits talk about the "bounce" that a presidential candidate gets after his party's convention. In the past 40 years, it has averaged about 6 percentage points. Just before a recent convention, a random poll of 1500 likely voters found that 57% favored a particular candidate. Just afterward, another random sample of 1500 likely voters found that 60% favored that candidate. That's a three percentage point increase, but the pollsters claimed that there was no bounce. Explain. Let population 1 correspond to likely voters that favored the candidate after the convention and population 2 correspond to likely voters that favored the candidate before the convention. Find and interpret the 95% confidence interval for the difference between the percentages of likely voters that favored the candidate (population 1-population 2). Select the correct answer below and fill in the answer boxes within your choice. (Use ascending order. Round to one decimal place as needed.) OA. Since the 95% confidence interval ( %, %) does not contain 0%, it is plausible that the bounce is zero. The pollsters should have instead claimed that there was no evidence of a bounce. OB. Since the 95% confidence interval %, %) contains 0%, it is plausible that the bounce is zero. The pollsters' claim that there was no bounce may be correct. OC. Since the 95% confidence interval ( %, %) does not contain 0%, it is not plausible that the bounce is zero. The pollsters should have Click to select and enter your answer(s) and then click Check Answer

Political pundits talk about the "bounce" that a presidential candidate gets after his party's convention. In the past 40 years, it has averaged about 6 percentage points. Just before a recent convention, a random poll of 1500 likely voters found that 57% favored a particular candidate. Just afterward, another random sample of 1500 likely voters found that 60% favored that candidate. That's a three percentage point increase, but the pollsters claimed that there was no bounce. Explain. Let population 1 correspond to likely voters that favored the candidate after the convention and population 2 correspond to likely voters that favored the candidate before the convention. Find and interpret the 95% confidence interval for the difference between the percentages of likely voters that favored the candidate (population 1-population 2). Select the correct answer below and fill in the answer boxes within your choice. (Use ascending order. Round to one decimal place as needed.) OA. Since the 95% confidence interval ( %, %) does not contain 0%, it is plausible that the bounce is zero. The pollsters should have instead claimed that there was no evidence of a bounce. OB. Since the 95% confidence interval %, %) contains 0%, it is plausible that the bounce is zero. The pollsters' claim that there was no bounce may be correct. OC. Since the 95% confidence interval ( %, %) does not contain 0%, it is not plausible that the bounce is zero. The pollsters should have Click to select and enter your answer(s) and then click Check Answer

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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Question Help v Political pundits talk about the "bounce" that a presidential candidate gets after his party's convention. In the past 40 years, it has averaged about 6 percentage points. Just before a recent convention, a random poll of 1500 likely voters found that 57% favored a particular candidate. Just afterward, another random sample of 1500 likely voters found that 60% favored that candidate. That's a three percentage point increase, but the pollsters claimed that there was no bounce. Explain. Let population 1 correspond to likely voters that favored the candidate after the convention and population 2 correspond to likely voters that favored the candidate before the convention. Find and interpret the 95% confidence interval for the difference between the percentages of likely voters that favored the candidate (population 1-population 2). Select the correct answer below and fill in the answer boxes within your choice. (Use ascending order. Round to one decimal place as needed.) O A. Since the 95% confidence interval ( %, %) does not contain 0%, it is plausible that the bounce is zero. The pollsters should have instead claimed that there was no evidence of a bounce. O B. Since the 95% confidence interval ( %, %) contains 0%, it is plausible that the bounce is zero. The pollsters' claim that there was no bounce may be correct. O C. Since the 95% confidence interval ( %, %) does not contain 0%, it is not plausible that the bounce is zero. The pollsters should have Click to select and enter your answer(s) and then click Check Answer. All parts showing
Transcribed Image Text:Question Help v Political pundits talk about the "bounce" that a presidential candidate gets after his party's convention. In the past 40 years, it has averaged about 6 percentage points. Just before a recent convention, a random poll of 1500 likely voters found that 57% favored a particular candidate. Just afterward, another random sample of 1500 likely voters found that 60% favored that candidate. That's a three percentage point increase, but the pollsters claimed that there was no bounce. Explain. Let population 1 correspond to likely voters that favored the candidate after the convention and population 2 correspond to likely voters that favored the candidate before the convention. Find and interpret the 95% confidence interval for the difference between the percentages of likely voters that favored the candidate (population 1-population 2). Select the correct answer below and fill in the answer boxes within your choice. (Use ascending order. Round to one decimal place as needed.) O A. Since the 95% confidence interval ( %, %) does not contain 0%, it is plausible that the bounce is zero. The pollsters should have instead claimed that there was no evidence of a bounce. O B. Since the 95% confidence interval ( %, %) contains 0%, it is plausible that the bounce is zero. The pollsters' claim that there was no bounce may be correct. O C. Since the 95% confidence interval ( %, %) does not contain 0%, it is not plausible that the bounce is zero. The pollsters should have Click to select and enter your answer(s) and then click Check Answer. All parts showing
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