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Jackie Fitch works for a consumer advocacy group

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Jackie Fitch works for a consumer advocacy group, Consumer Action Group, and is currently working on an article comparing three local hardware stores, Hanways, Wrightsville, and Home Service. Each store claims to give low prices. So as part of her article she wants to compare prices. She calls an old marketing professor, Professor Brown, to assist her in designing the experiment. Jackie proceeds to randomly select 100 items from the Home Service store and correspondingly finds 80 and 87 of these items at Hanways and Wrightsville (file: Truevalue), i.e., each row in the file is the prices for the same item in each store.

See attached file (truevalue)

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Solution Summary

The solution provides detailed explanations and graphs in the attached Excel file.

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The best way to solve this problem is to plot the prices of one store against another. I have done so in the accompanied file. You can doing ...

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