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

question 67

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 8.1 hours.

• A)0.8531
• B)0.9146
• C)0.7285
• D)0.8457

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Definitions:

Negative Results

Outcomes that are detrimental, opposite of intended, or do not meet the expected or desired objectives.

Positive Results

Beneficial outcomes or achievements that stem from specific actions, measures, or experiments.

Emotional Arousal

A state of heightened physiological and emotional response to stimuli, which can influence behavior and perception.

Self-Efficacy

An individual’s belief about the likelihood of successfully completing a specific task.