a) A poll of 2,203 likely voters was conducted on the president’s performance. Approximately what margin of error would the approval rating estimate have if the confidence level is 95%? (b) The poll showed that 47 percent approved the president’s performance. Construct a 90 percent confidence interval for the true proportion.

a) A poll of 2,203 likely voters was conducted on the president’s performance. Approximately what margin of error would the approval rating estimate have if the confidence level is 95%? (b) The poll showed that 47 percent approved the president’s performance. Construct a 90 percent confidence interval for the true proportion.

Holt Mcdougal Larson Pre-algebra: Student Edition 2012

1st Edition

ISBN:9780547587776

Author:HOLT MCDOUGAL

Publisher:HOLT MCDOUGAL

Chapter11: Data Analysis And Probability

Section11.4: Collecting Data

Problem 3E

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