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MATLAB: An Introduction with Applications
6th Edition
ISBN: 9781119256830
Author: Amos Gilat
Publisher: John Wiley & Sons Inc
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
Transcribed Image Text:Based on the data from question 8, for testing if first-borns population (group 1) have a larger mean IQ compared to later-borns
(group 2) using the two-sample t-test, what is the null hypothesis and alternative hypothesis?
A) H_0: μ_1=u_2, H_A: μ_1>u_2
BH_0: _1>μ_2, H_A: µ_1=µ_2
CH_0: μ_1-p_2, H_A: μ_1 p_2
(D) H_0: μ_1=H_2, H_A: μ_1<μ_2

Transcribed Image Text:Use the following data to answer question 8 - 12. A number of studies have claimed evidence that the first-born in a family is, on
the whole, more likely to be "successful" than later-borns. A study along this direction compared the IQs of a random sample of 80
first-borns with those of an independent random sample of 105 later-borns. The data are summarized below:
Sample size
Sample mean
Sample SD
First-borns
80
112
7.2
Later-borns
105
108
8.0
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