A survey of 100 mayonnaise purchasers showed that 65 were loyal to one brand. For 100 bath

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A survey of 100 mayonnaise purchasers showed that 65 were loyal to one brand. For 100 bath soap purchasers, only 53 were loyal to one brand. Form a 95 percent confidence interval for the difference of proportions. Does it include zero?

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Applied Statistics In Business And Economics

ISBN: 9780073521480

4th Edition

Authors: David Doane, Lori Seward

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Question Posted: Aug 19, 2015 04:48 AM

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A survey of 100 mayonnaise purchasers showed that 65 were loyal to one brand. For 100 bath

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Yes the interval includes zero There i...View the full answer

Applied Statistics In Business And Economics

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