In an intelligence exam to determine the IQ of students, it is found out that the results are normally distributed with a mean of 100 and a standard deviation of 16. What is the percentage of students who have IQs between 115 and 140?

A First Course in Probability (10th Edition)
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ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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In an intelligence exam to
determine the IQ of students,
it is found out that the results
are normally distributed with a
mean of 100 and a standard
deviation of 16. What is the
percentage of students who
have IQs between 115 and
140?
O 0.1680
O 0.1460
O 0.1520
O 0.1580
Transcribed Image Text:In an intelligence exam to determine the IQ of students, it is found out that the results are normally distributed with a mean of 100 and a standard deviation of 16. What is the percentage of students who have IQs between 115 and 140? O 0.1680 O 0.1460 O 0.1520 O 0.1580
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