According to Randall Financial, through April 25, 2018, 64% of companies reported profits had exceeded quarterly estimates.  How large a sample is needed for a 95% confidence and a desired margin of error of .05 for those that exceed quarterly estimates?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section: Chapter Questions
Problem 8SGR
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According to Randall Financial, through April 25, 2018, 64% of companies reported profits had exceeded quarterly estimates.  How large a sample is needed for a 95% confidence and a desired margin of error of .05 for those that exceed quarterly estimates?

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