A random sample of 15 automobile mechanics certified to work on a certain type of car was

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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 diagnose a particular problem was determined, resulting in the following data:

Use the Wilcoxon test at significance level .10 to decide whether the data suggests that true average diagnostic time is less than 30 minutes.

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Probability And Statistics For Engineering And The Sciences

ISBN: 9781305251809

9th Edition

Authors: Jay L. Devore

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Question Posted: Jan 27, 2017 11:47 AM

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A random sample of 15 automobile mechanics certified to work on a certain type of car was

Question:

0.6 30.1 15.6 26.7 27.1 254 35.0 30.8 1.9 53.2 12.5 23.2 8.8 24.9 30.2

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The appropriate test is H 0 30 vs H a 30 The x i 30s are 06 01 144 33 29 46 ...View the full answer

Probability And Statistics For Engineering And The Sciences

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