A Random Sample of 15 Automobile Mechanics Certified to Work

question 38

Essay

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: $$\begin{array} { l l l l l l l l } 32.6 & 32.1 & 17.6 & 28.7 & 29.1 & 27.4 & 37.0 & 32.8 \\33.9 & 55.2 & 14.5 & 25.2 & 10.8 & 26.9 & 32.2 &\end{array}$$ Use the Wilcoxon test at significance level .10 to decide whether the data suggests that "true" average diagnostic time is less than 32 minutes.

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Definitions:

Assets

Assets held or managed by a company anticipated to yield future financial gains.

Partnership

A business structure where two or more individuals share ownership, profits, liabilities, and decision-making processes.

Ownership

Ownership denotes the legal rights to possess, use, control, benefit from, and dispose of an asset or property.

Partnership

An officially permitted business engagement where various individuals participate in oversight and income sharing.