Question: In Problem 12 4 on page 423 you used the percentage

In Problem 12.4 on page 423, you used the percentage of alcohol to predict wine quality. The data are stored in VinhoVerde. For these data, SYX = 0.9369 and hi = 0.024934 when X = 10.
a. Construct a 95% confidence interval estimate of the mean wine quality rating for all wines that have 10% alcohol.
b. Construct a 95% prediction interval of the wine quality rating of an individual wine that has 10% alcohol.
c. Explain the difference in the results in (a) and (b).

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  • CreatedJuly 16, 2015
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