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:

Energy Diagram

A graphical representation showing the energy levels of products and reactants during a chemical reaction and indicating the activation energy.

Transition State

A high-energy state during a chemical reaction where reactants are transformed into products, representing the maximum energy point along the reaction pathway.

Rate Determining Step

The slowest step in a chemical reaction mechanism that determines the overall rate of reaction.

Exothermic Reaction

A chemical reaction that releases energy in the form of heat or light, often making the surroundings warmer.