Solve the Problem. -A Study of the Amount of Time It Takes a It

question 44

Multiple Choice

Solve the problem.
-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 1.8 hours. If 40 mechanics are randomly selected, find the probability that their mean rebuild time exceeds 9.1 hours.

• A)0.0046
• B)0.1046
• C)0.1285
• D)0.0069

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Definitions:

Adequate Level

A standard or measure that is deemed sufficient or satisfactory for its intended purpose.

Acceptability

The extent to which an idea, product, or behavior is perceived as agreeable, suitable, or satisfactory by a group or individual.

Satisficers

Individuals who make decisions that suffice to meet their needs rather than optimizing the best possible outcome.

Solutions

Solutions are answers or ways to effectively deal with a problem or challenge.