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

question 109

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 and B's to the next 23%. What is the
Bottom cutoff for a B grade? Round your answer to the nearest whole number.

• A)71
• B)74
• C)66
• D)76

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Definitions:

Socialize

The process of learning and adapting to the norms, customs, values, and behaviors necessary for participating within a society or group.

Food

Nutritious substances that living organisms eat or drink to maintain life and growth.

Water

A tasteless, odorless, and transparent liquid that forms the world's streams, lakes, oceans, and rain and is necessary for all known forms of life.

Gate Control

Refers to the gate control theory of pain which posits that pain signals pass through neural "gates" in the spinal cord and can be modulated by other neural signals.