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

question 70

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 7.7 hours.

• A) 0.9712
• B) 0.9931
• C) 0.9634
• D) 0.8531

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Definitions:

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A pea-sized gland situated at the base of the brain, important in controlling growth and development and the functioning of the other endocrine glands.

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Tools and methods used to visualize and study the structure and function of the brain.

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The potential harmful effects on human health and the environment from exposure to ionizing radiation, which can lead to acute or chronic health issues depending on the dose and duration of exposure.