Solve the Problem. -Scores on a Test Are Approximately Normally Distributed with a Distributed

question 184

Multiple Choice

Solve the problem.
-Scores on a test are approximately normally distributed with a mean of 70 and a standard deviation of 9. The teacher wants to give A's to the top 10% of students, B's to the next 25%, and C's to the
Next 42%. What is the bottom cutoff for a C grade? Round your answer to the nearest whole
Number.

• A)77
• B)68
• C)65
• D)63

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Definitions:

Indeterminate

A situation or outcome that cannot be predicted, decided, or clearly defined.

Total Utility

The complete fulfillment derived from the consumption of a specific amount of products or services.

Marginal Utility

The extra pleasure or advantage obtained from the consumption of an additional unit of a product or service.

Beers

Alcoholic beverages made from fermented grains like barley, often flavored with hops and served as a popular social drink.