Scores on a Test Are Normally Distributed with a Mean $P _ { 81 } ,$

question 22

Multiple Choice

Scores on a test are normally distributed with a mean of 63.2 and a standard deviation of 11.7 . Find $P _ { 81 } ,$ which separates the bottom 81% from the top 19% .

• A) 0.291
• B) 73.5
• C) 0.88
• D) 66.6

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Definitions:

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A considerable reduction in value, functionality, or quantity of something, often financially quantified.

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The shaft or column that connects the steering wheel to the steering mechanism, facilitating vehicle steering control.

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A manually operated valve designed for controlling the flow of liquids or gases, often used in industrial applications or within vehicle hydraulic systems.