A recent Gallup poll showed the presidents approval rating at 60%. Some friends use this information (along

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A recent Gallup poll showed the president’s approval rating at 60%. Some friends use this information (along with the sample size from the poll) and find theory-based confidence intervals for the proportion of all adult Americans that approve of the presidents performance. Of the following four confidence intervals, identify the ones that were definitely done incorrectly. (There may be more than one interval that is incorrect.)
A. (0.57, 0.63)
B. (0.60, 0.66)
C. (0.58, 0.62)
D. (0.47, 0.53)

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Introduction To Statistical Investigations

ISBN: 9781118172148

1st Edition

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

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