A political candidate feels that she performed particularly well in the most recent debate against her opponent. Her campaign manager polled a random sample of 400 likely voters before the debate and a random sample of 500 likely voters after the debate. The 95% confidence interval for the true difference (post-debate minus pre-debate) in proportions of likely voters who would vote for this candidate was (-0.014, 0.064). What is the margin of error for this confidence interval? 0.064 + (-0.014) 2 = 0.025 0.064 - (-0.014) = 0.039 2 0.064 + (-0.014) = 0.050 O 0.064 – (-0.014) = 0.078

A political candidate feels that she performed particularly well in the most recent debate against her opponent. Her campaign manager polled a random sample of 400 likely voters before the debate and a random sample of 500 likely voters after the debate. The 95% confidence interval for the true difference (post-debate minus pre-debate) in proportions of likely voters who would vote for this candidate was (-0.014, 0.064). What is the margin of error for this confidence interval? 0.064 + (-0.014) 2 = 0.025 0.064 - (-0.014) = 0.039 2 0.064 + (-0.014) = 0.050 O 0.064 – (-0.014) = 0.078

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter10: Statistics

Section10.6: Summarizing Categorical Data

Problem 30PPS

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