A pollster wants to conduct a pre-election poll with a margin of error of 2.5% and a 95% confidence level. The pollster does not know ahead of time what the proportion in favor of either candidate is. How many people must be included in the sample to achieve the goal of a 2.5% margin of error? Note that P- hat is unknown and is therefore assumed to be 0.5

A pollster wants to conduct a pre-election poll with a margin of error of 2.5% and a 95% confidence level. The pollster does not know ahead of time what the proportion in favor of either candidate is. How many people must be included in the sample to achieve the goal of a 2.5% margin of error? Note that P- hat is unknown and is therefore assumed to be 0.5

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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