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

question 54

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 is less than 8.9 hours.

• A) 0.4276
• B) 0.9608
• C) 0.9756
• D) 0.9589

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Definitions:

Social Circumstances

The environmental, economic, social, and cultural factors that influence an individual's life and development.

Psychological Factors

Elements of human behavior that influence mental health and wellbeing, including emotions, thoughts, and personality traits.

DSM-IV-TR

The fourth edition, text revision of the Diagnostic and Statistical Manual of Mental Disorders, a guide used by healthcare professionals to diagnose mental disorders.

DSM-IV-TR

The fourth edition, text revision, of the Diagnostic and Statistical Manual of Mental Disorders, a guide for diagnosing mental disorders.