A Study of the Amount of Time It Takes a Mechanic

question 45

Multiple Choice

A study of the amount of time it takes a mechanic to rebuild the transmission for a 1992 Chevrolet Cavalier shows that the mean is 8.4 hours and the standard deviation is 1.77 hours.
Assume that a random sample of 40 mechanics is selected and the mean rebuild time of the sample is computed. Assuming the mean times are normally distributed, what percentage of sample means are greater than 9.1 hours?

• A) 65.54%
• B) 34.46%
• C) 0.62%
• D) 99.38%

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Definitions:

Stereotyping

The act of assigning oversimplified and generalized characteristics to a group of people or things.

Individualism

A social theory or philosophy emphasizing the moral worth and autonomy of the individual over communal or collective interests.

Collectivism

A cultural value or ideology emphasizing the priority of group goals over individual goals and the importance of cohesion within social groups.

Uncertainty Avoidance

Uncertainty avoidance is a cultural dimension that describes the extent to which a society tolerates ambiguity and uncertainty, influencing communication patterns and behaviors.