A publishing company wants to make biology textbooks more affordable. Their marketing department would like to determine the proportion of current biology textbooks that are above a certain price with 90% confidence and a margin of error of 5%. How many textbooks do they need to select?

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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A publishing company wants to make biology textbooks more affordable. Their marketing department would like to determine the proportion of current biology textbooks that are above a certain price with 90% confidence and a margin of error of 5%. How many textbooks do they need to select?

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