The file Sedans contains the overall miles per gallon (MPG) of 2013 midsized sedans: 38 26 30
Question:
38 26 30 26 25 27 22 27 39 24 24 26 25
23 25 26 31 26 37 22 29 25 33 21 21
Source: Data extracted from "Ratings," Consumer Reports, April 2013, pp. 30-31.
a. Construct a 95% confidence interval estimate for the population means MPG of 2013 family sedans, assuming a normal distribution.
b. Interpret the interval constructed in (a).
c. Compare the results in (a) to those in Problem 8.20(a).
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FHStat output Confidence interval Estimate for the mean a 2504 2920 b You can be 95 ...View the full answer
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Related Book For 
Basic Business Statistics
ISBN: 9780321870025
13th Edition
Authors: Mark L. Berenson, David M. Levine, Kathryn A. Szabat
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