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In a survey of 2274 adults in a recent year, 1368 say they have made a New Year's resolution. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.

In a survey of 2274 adults in a recent year, 1368 say they have made a New Year's resolution. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals.

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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Statistics Question 12

In a survey of 2274 adults in a recent year, 1368 say they have made a New Year's resolution. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. The 90% confidence interval for the population proportion p is (Round to three decimal places as needed.) The 95% confidence interval for the population proportion p is (Round to three decimal places as needed.) With the given confidence, it can be said that the resolution is of adults who say they have made a New Year's of the given confidence interval. Compare the widths of the confidence intervals. Choose the correct answer below. A. The 90% confidence interval is wider. B. The 95% confidence interval is wider. C. The confidence intervals are the same width. D. The confidence intervals cannot be compared.
Transcribed Image Text:In a survey of 2274 adults in a recent year, 1368 say they have made a New Year's resolution. Construct 90% and 95% confidence intervals for the population proportion. Interpret the results and compare the widths of the confidence intervals. The 90% confidence interval for the population proportion p is (Round to three decimal places as needed.) The 95% confidence interval for the population proportion p is (Round to three decimal places as needed.) With the given confidence, it can be said that the resolution is of adults who say they have made a New Year's of the given confidence interval. Compare the widths of the confidence intervals. Choose the correct answer below. A. The 90% confidence interval is wider. B. The 95% confidence interval is wider. C. The confidence intervals are the same width. D. The confidence intervals cannot be compared.
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