A Gallup survey of 1,100 randomly selected U.S. adults conducted June 2019 found that 53% of those

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A Gallup survey of 1,100 randomly selected U.S. adults conducted June 2019 found that 53% of those surveyed were satisfied with the quality of education students receive in K through 12 grade in the United States Based on these data, I found the 95% confidence interval for the proportion of U.S. adults who are satisfied with the quality of the K-12 education that students receive to be (0.501, 0.559). Which of A–C is a valid statement? 

A. A 99% confidence interval based on the same data would be narrower. 

B. A 99% confidence interval based on the same data would be wider. 

C. A 99% confidence interval based on the same data would have the same width as the 95% confidence interval.

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Introduction To Statistical Investigations

ISBN: 9781119683452

2nd Edition

Authors: Beth L.Chance, George W.Cobb, Allan J.Rossman Nathan Tintle, Todd Swanson Soma Roy

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