A random sample of 160 shoppers was asked to compare two new energy bars. From the sample,
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A random sample of 160 shoppers was asked to compare two new energy bars. From the sample, 91 shoppers preferred energy bar A, 61 preferred energy bar B, and 8 expressed no preference. Use the normal approximation to determine, at the 1% level, if there is an overall preference for either energy bar.
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Related Book For 
Statistics For Business And Economics
ISBN: 9781292315034
9th Global Edition
Authors: Paul Newbold, William Carlson, Betty Thorne
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