It is desired to know the true proportion of divers who get "the bends" (sickness from nitrogen in the blood). If we wanted to be 92% confident that the maximum margin of error is 0.04, how large a sample is needed if a previous study found that 21% of divers suffered from "the bends"? Group of answer choices 318 divers 320 divers 319 divers 317 divers

Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter7: Applying Fractions
Section7.2: Proportions
Problem 47WE
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It is desired to know the true proportion of divers who get "the bends" (sickness from nitrogen in the blood). If we wanted to be 92% confident that the maximum margin of error is 0.04, how large a sample is needed if a previous study found that 21% of divers suffered from "the bends"? Group of answer choices 318 divers 320 divers 319 divers 317 divers
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