How can I find the solutions and answers to this problem? THE DISTRIBUTION OF INTELLIGENCE QUOTIENTs (IQs) OBTAINED FROM A PARTICULAR TEST IS APPROXIMATELY NORMAL WITH A MEAN OF 100 AND A STANDARD DEVIATION OF 15 . a) WHAT IS THE STANDARD-SCORE OF THE IQ OF 120? b) ESTIMATE WHAT PERCENT OF INDIVIDUALS IN THE POPULATION HAVE IQs OF 120 AND ABOVE.

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
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Chapter1: Combinatorial Analysis
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How can I find the solutions and answers to this problem?

THE DISTRIBUTION OF INTELLIGENCE QUOTIENTs (IQs) OBTAINED FROM A PARTICULAR TEST IS APPROXIMATELY NORMAL WITH A MEAN OF 100 AND A STANDARD DEVIATION OF 15 .

a) WHAT IS THE STANDARD-SCORE OF THE IQ OF 120?

b) ESTIMATE WHAT PERCENT OF INDIVIDUALS IN THE POPULATION HAVE IQs OF 120 AND ABOVE.

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