Answered: In a study of birth order and…

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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In a study of birth order and intelligence, IQ tests were given to

- and

-year-old men to estimate the size of the difference, if any, between the mean IQs of firstborn sons and secondborn sons. The following data for

firstborn sons and

secondborn sons are consistent with the means and standard deviations reported in the article. It is reasonable to assume that the samples come from populations that are approximately normal. Can you conclude that the mean IQ of firstborn sons differs from the mean IQ of secondborn sons? Let

μ1

denote the mean IQ of firstborn sons and

μ2

denote the mean IQ of secondborn sons. Use the

=α0.05

level and the

-value method with the TI-84 Plus calculator.

reject or not

is there evidence or not

Firstborn
101	84	122	84	88
97	130	109	83	93

Secondborn
115	125	84	112	113
113	129	83	97	126

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