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# Suppose the data presented below represented the number of unit

### Customer Question

Suppose the data presented below represented the number of
unit sales (million \$) for athletic footwear in the years 2000 and
2009. Use techniques presented in this chapter to analyze these
data and discuss the business implications for Foot Locker.
Price Category 2000 2009
Less than \$30 115 126
\$30–less than \$40 38 40
\$40–less than \$50 37 35
\$50–less than \$60 30 27
\$60–less than \$70 22 20
\$70–less than \$85 21 20
\$85–less than \$100 11 11
\$100 or more 17 18
Suppose Foot Locker strongly encourages its employees to
make formal suggestions to improve the store, the product, and
the working environment. Suppose a quality auditor keeps
records of the suggestions, the persons who submitted them,
and the geographic region from which they come. A possible
breakdown of the number of suggestions over a 3-year period
by employee sex and geographic location follows. Is there any
relationship between the sex of the employee and the geographic location in terms of number of suggestions?

If they are
related, what does this relationship mean to the company? What
business implications might there be for such an analysis?

Sex
Male Female
U.S. West 29 43
U.S. South 48 20
U.S. East 52 61
U.S. North 28 25

According to Wells Fargo Securities and the NPDFashionworld Consumer Panel, Foot Locker holds 19.4% of the
sneaker market. Suppose that due to its relationship with Nike
and Nike’s presence in the U.S. West region, Foot Locker
believes that its share of the market in that region is higher
than it is in the rest of the country. Foot Locker hires a market
research company to test this notion. The research company
randomly samples 1000 people in the U.S. West who have just
purchased a pair of sneakers and 230 of the sampled shoppers
purchased their sneakers at Foot Locker. Is this result enough
evidence to declare that Foot Locker’s share of the market in
the U.S. West is signiﬁcantly higher than it is otherwise? Use
techniques from this chapter to test this hypothesis. What
business implications might there be for Foot Locker if this
market share information is true?

Sorry long question. Please show formulas used so I can use it for similar problems
Submitted: 3 years ago.
Expert:  R.R. Jha replied 3 years ago.
Hello,
Welcome to our forum!

I'm RRJha and I'd be glad to help with your question. Do we need to answer these questions using Chi-square Test? All of them are saying 'techniques from this chapter'.

Thanks
Customer: replied 3 years ago.

Yes, Chi-square test of independence formula . And if you could show me steps/formulas used that will help me solve similar questions.

Expert:  R.R. Jha replied 3 years ago.
Sure, I'll show the formula and steps.