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Student IQ scores collected from a school are approximately normally distributed with a mean of 108 and a standard deviation of 9. Use the 68 95 - 99.7 rule to answer the following questions. Part 1. a) What proportion of the student IQ scores are between 99 and 117? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule) b) What range contains the central 99.7% of IQ scores? [Number 1 Number Part 2. Alex has an IQ of 126. (Enter the exact value according to the 68-95-99.7 rule). c) How many standard deviations above the mean is Alex's IQ? Number (Enter the exact value according to the 68-95-99.7 rule) d) Hence, what proportion of students in the school have an IQ lower than Alex's IQ? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule)

Student IQ scores collected from a school are approximately normally distributed with a mean of 108 and a standard deviation of 9. Use the 68 95 - 99.7 rule to answer the following questions. Part 1. a) What proportion of the student IQ scores are between 99 and 117? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule) b) What range contains the central 99.7% of IQ scores? [Number 1 Number Part 2. Alex has an IQ of 126. (Enter the exact value according to the 68-95-99.7 rule). c) How many standard deviations above the mean is Alex's IQ? Number (Enter the exact value according to the 68-95-99.7 rule) d) Hence, what proportion of students in the school have an IQ lower than Alex's IQ? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule)

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Student IQ scores collected from a school are approximately normally distributed with a mean of 108 and a standard deviation of 9. Use the 68 95 - 99.7 rule to answer the following questions. Part 1. a) What proportion of the student IQ scores are between 99 and 117? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule) b) What range contains the central 99.7% of IQ scores? [Number Number Part 2. Alex has an IQ of 126. (Enter the exact value according to the 68-95-99.7 rule) c) How many standard deviations above the mean is Alex's IQ? Number (Enter the exact value according to the 68-95-99.7 rule) d) Hence, what proportion of students in the school have an IQ lower than Alex's IQ? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule)
Transcribed Image Text:Student IQ scores collected from a school are approximately normally distributed with a mean of 108 and a standard deviation of 9. Use the 68 95 - 99.7 rule to answer the following questions. Part 1. a) What proportion of the student IQ scores are between 99 and 117? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule) b) What range contains the central 99.7% of IQ scores? [Number Number Part 2. Alex has an IQ of 126. (Enter the exact value according to the 68-95-99.7 rule) c) How many standard deviations above the mean is Alex's IQ? Number (Enter the exact value according to the 68-95-99.7 rule) d) Hence, what proportion of students in the school have an IQ lower than Alex's IQ? Number % (Enter the exact value as a percentage according to the 68-95-99.7 rule)
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