A Set of Final Examination Grades in a Calculus Course

question 114

Multiple Choice

A set of final examination grades in a calculus course was found to be normally distributed with a mean of 69 and a standard deviation of 9. What is the probability of getting a grade of 91 or less on this exam?

• A) 1.00
• B) .50
• C) .0073
• D) .9927

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Definitions:

Horizontal

A direction or plane that runs parallel to the ground or horizon.

Income Elasticity

A measure of how much the demand for a product or service changes with a change in consumers' income.

Low-Quality Beef

Beef that is considered to be of inferior grade or quality due to factors like fat content, marbling, or age of the animal.

Income

Funds received routinely through work or investing activities.