Question: 15.38 Comparing wine tasters. Two wine tasters rate each wine they taste on a scale of 1 to 5. From data on their ratings of

15.38 Comparing wine tasters. Two wine tasters rate each wine they taste on a scale of 1 to 5. From data on their ratings of a large number of wines, we obtain the following probabili ties for both tasters' ratings of a randomly chosen wine (see the chart).

with how much a person drinks. The investigators used ad vanced statistical methods to adjust for many such variables be fore concluding that the moderate drinkers really have a lower risk of death.

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