Soon after he took office in 1963, President Lyndon Johnson was approved by 160 out of a
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Soon after he took office in 1963, President Lyndon Johnson was approved by 160 out of a sample of 200 Americans. With growing dissatisfaction over his Vietnam policy, by 1968 he was approved by only 70 of 200 Americans. Find the 95% confidence interval for the percentage of all Americans who approved of Johnson in 1963. What is the 95% confidence interval for the change in approval?
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International Marketing And Export Management
ISBN: 9781292016924
8th Edition
Authors: Gerald Albaum , Alexander Josiassen , Edwin Duerr
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