Obtain a 95% signed-rank interval for true average diagnostic time using the data in Exercise 14. Data
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Obtain a 95% signed-rank interval for true average diagnostic time using the data in Exercise 14.
Data From Exercise 14
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A random sample of 15 automobile mechanics certified to work on a certain type of car was selected, and the time (in minutes) necessary for each one to diag- nose a particular problem was determined, resulting in the following data: 30.6 30.1 15.6 26.7 27.1 25.4 35.0 30.8 31.9 53.2 12.5 23.2 8.8 24.9 30.2 Use the Wilcoxon test at significance level .10 to decide whether the data suggests that true average diagnostic time is less than 30 min.
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To obtain a 95 signedrank interval for the true average diagnostic time we will use the Wilcoxon SignedRank Test method for a onesample case The Wilco...View the full answer
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Related Book For
Modern Mathematical Statistics With Applications
ISBN: 9783030551551
3rd Edition
Authors: Jay L. Devore, Kenneth N. Berk, Matthew A. Carlton
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