Professor Elderman Has Given the Same Multiple-Choice Final Exam in His

question 113

Multiple Choice

Professor Elderman has given the same multiple-choice final exam in his Principles of Microeconomics class for many years. After examining his records from the past 10 years, he finds that the scores have a mean of 76 and a standard deviation of 12. Professor Elderman offers his class of 36 a pizza party if the class average is above 80. What is the probability that he will have to deliver on his promise?

• A) 0.0228
• B) 0.3707
• C) 0.6293
• D) 0.9772

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Definitions:

Erratic Assist

A term used to describe unpredictable or inconsistent help or support, often in the context of mechanical or electronic systems.

Power Steering System

A system in vehicles that uses hydraulic or electric assistance to reduce the effort needed to steer the wheels.

Idler Arms

Components in vehicle steering systems that support the steering linkage and help maintain proper wheel alignment.

Dial Indicator

A precision measurement tool used to measure small distances or angles, often utilized in mechanical engineering and machining.