Mathematics, 26.03.2021 16:00 crazylogic5094
Each of 200 subjects were shown a proposed commercial and asked to identify the marketed product 5 minutes after the viewing. A​ 95% confidence interval was​ calculated, but the client indicated that the resultant margin of error is too large and must be​ one-fourth its current size. How large does the new sample need to​ be?
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Each of 200 subjects were shown a proposed commercial and asked to identify the marketed product 5 m...
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