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Using the Chi Square to Make Decisions

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Can you provide an example of how the chi square might be used to help make a managerial decision.

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This response provides an explanation on how the chi square might be used in terms of decision making.

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Can you provide an example of how the chi square might be used to help make a managerial decision.
Example:
David Gallano, a wine merchant, has selected opinions on grape wine quality from a random sample of his customers. The customers tasted wine made from grapes grown in three regions of the country. The customers rated wine quality on a scale of 1 (best) to 4 (worst). The sample data looks like:
Customer Quality Rating of Wine by Grape-growing region
Quality Rating Growing Region
I Growing Region
II Growing Region
III Row Total
1 15 10 6 31
2 7 13 12 32
3 11 12 8 31
4 3 8 15 26
Column Total 36 43 41 120
David wants to know whether quality ratings are independent of the grape-growing region. ...

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