HWK 8 - Homework #8 Problems 5 and 7 on Page 483 Problem #5...

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Homework #8 Problems 5 and 7 on Page 483 Problem #5 Business Issue: Where women buy their casual clothing most often. Business Question: Does the sample provide evidence that that women shoppeers in atlanta differ from the shopping preferences expressed in the US Shopper Data Base? Data: Source U.S. Shopper Database and The Wall Street Journal, also a survey of 140 women, with k=6 Analysis: Hypotheses Ho: Population Proportions = US Shopper Database Ha: Test Statistic ChiSq = Sum for all k categories of [(f - e)^2 / e] If Ho is true, then this statistic is ChiSq distributed with DF = k-1 or 5 Sig. Level Alpha = .05 Reject Rule Reject Ho if Chiinv > 11.07 Calculations Brand: US Shop F's E's [(f - e)^2 / e] Walmart 24 42 28.8 6.050 Trad. Dpt. Store 11 20 13.2 3.503 JC Penny 8 8 9.6 0.267 Kohl's 8 10 9.6 0.017 Mail Order 12 21 14.4 3.03 Other 37 39 44.4 0.657 ChiSq = 13.518 P-Value = 0.02 Conclusion Reject Ho Business Answer This sample of 120 provides strong evidence to support the conclusion that women's shopping preferences have changed. The sample shows that some preferences have swtiched mainly to walmart
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HWK 8 - Homework #8 Problems 5 and 7 on Page 483 Problem #5...

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