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random sample of subjects with high lead levels in their blood. The statistics are summarized below. Use a 0.05 significance level to test the claim that the mean IQ score of people with low lead levels in their blood is higher than those with high lead levels in their blood. Let u represent a low lead level.    Low lead Level : n=23 x= 89.90476

random sample of subjects with high lead levels in their blood. The statistics are summarized below. Use a 0.05 significance level to test the claim that the mean IQ score of people with low lead levels in their blood is higher than those with high lead levels in their blood. Let u represent a low lead level.    Low lead Level : n=23 x= 89.90476

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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Data lists full IQ scores for a random sample of subjects with low lead levels in their blood and another random sample of subjects with high lead levels in their blood. The statistics are summarized below. Use a 0.05 significance level to test the claim that the mean IQ score of people with low lead levels in their blood is higher than those with high lead levels in their blood. Let u represent a low lead level. 

 

Low lead Level : n=23

x= 89.90476

s= 11.988352

 

Higher Lead Level: n= 76

x= 89.89462

s= 13.34451

Determine the p-value and which type of test is required. 

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