In Problem 12.7 on page 424, you used the plate gap on the bag sealing equipment to

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In Problem 12.7 on page 424, you used the plate gap on the bag sealing equipment to predict the tear rating of a bag of coffee. The data are stored in Starbucks.
a. Construct a 95% confidence interval estimate of the mean tear rating for all bags of coffee when the plate gap is 0.
b. Construct a 95% prediction interval of the tear rating for an individual bag of coffee when the plate gap is 0.
c. Why is the interval in (a) narrower than the interval in (b)?
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Business Statistics A First Course

ISBN: 9780321979018

7th Edition

Authors: David M. Levine, Kathryn A. Szabat, David F. Stephan

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