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

question 128

Multiple Choice

Solve the problem.
-A study of the amount of time it takes a mechanic to rebuild the transmission for a 2005 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) 0.1285
• B) 0.1046
• C) 0.0046
• D) 0.0069

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Definitions:

Unskilled Labor

Workers who lack specialized training or qualifications, often performing manual or simple tasks.

Surplus

The amount by which the quantity supplied of a commodity exceeds the quantity demanded at a specific price.

Minimum Wage

The lowest legal hourly pay that workers can be paid by their employers, set by government policy.

Teenagers

Persons in the age group of 13 to 19 years, characterizing the transition from childhood to adulthood.