Answered: e IQ scores for a random sample of…

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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Part 1

		μ	n	x	s
Low Lead Level	μ1	93	90.56744	15.92576
High Lead Level	μ2	24	87.56893	9.05832

Tstat
P value
State the conclusion
Construct a confidence interval suitable for testing the claim that the two samples are from populations with the same mean.
Does lead exposure have an effect on IQ scores

Features Features Normal distribution is characterized by two parameters, mean (µ) and standard deviation (σ). When graphed, the mean represents the center of the bell curve and the graph is perfectly symmetric about the center. The mean, median, and mode are all equal for a normal distribution. The standard deviation measures the data's spread from the center. The higher the standard deviation, the more the data is spread out and the flatter the bell curve looks. Variance is another commonly used measure of the spread of the distribution and is equal to the square of the standard deviation.

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