Answered: 15. IQ and Lead Exposure Standard IQ… | bartleby

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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15. IQ and Lead Exposure Standard IQ tests are designed to yield a population mean of 100.
Data Set 11 "IQ and Lead" in Appendix B includes IQ scores of 21 children with high expo-
sure to lead. For this group, the IQ scores have a mean of 86.90476 and a standard deviation of
8.988352. Use a 0.05 significance level to test the claim that this sample is from a population
with mean IQ equal to 100. Do the results prove that exposure to lead has an adverse effect on
IQ scores of children?
Doto Fot 3? "Taxis" from Appendix B,

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