A Study of the Amount of Time It Takes a Mechanic

question 212

Multiple Choice

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 mechanicsare randomly selected, find the probability that their mean rebuild time exceeds 9.1 hours.

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

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Definitions:

Respect

The admiration and regard for someone or something, often due to their abilities, qualities, or achievements.

Flow

A satisfying psychological state resulting from the confluence of high challenge and high skill, in contrast to states of apathy, anxiety, and boredom. Dimensions of flow include a clear and present purpose, immediate feedback, supreme concentration, a sense of growth, and an altered sense of time.

Tubular Reabsorption

A process in the kidneys where substances are removed from the tubular fluid and returned to the blood.

Interstitial Fluid

The fluid that fills the spaces between cells in tissues, providing a means of nutrient and waste transport between blood vessels and cells.