8. A large online retailer is analyzing how frequently their product WonderWidget™ is returned. Out of 345 Wonder Widgets bought, 48 were returned. (a) Find the 97% confidence interval for the long-run proportion of WonderWidgets returned. (b) If the retailer wanted to obtain a 97% confidence interval with a margin of error +0.03, how many purchases it should analyze?

8. A large online retailer is analyzing how frequently their product WonderWidget™ is returned. Out of 345 Wonder Widgets bought, 48 were returned. (a) Find the 97% confidence interval for the long-run proportion of WonderWidgets returned. (b) If the retailer wanted to obtain a 97% confidence interval with a margin of error +0.03, how many purchases it should analyze?

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 9SGR

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