Suppose a sample of adults revealed data regarding whether or not a person who smokes also has a tattoo. Given the observed data below, test the claim with a significance level of 0.05, that having a tattoo is independent of whether or not the person is a smoker.

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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f) Test Statistic x?
[ Select ]
[ Select ]
6.5
4.5
7.0
5.5
>
Transcribed Image Text:f) Test Statistic x? [ Select ] [ Select ] 6.5 4.5 7.0 5.5 >
Suppose a sample of adults revealed data regarding whether or not a
person who smokes also has a tattoo. Given the observed data below,
test the claim with a significance level of 0.05, that having a tattoo is
independent of whether or not the person is a smoker.
Smoker Non-Smoker Totals
Has a Tattoo
35
70
Doesn't have a Tattoo 20
85
Totals
Transcribed Image Text:Suppose a sample of adults revealed data regarding whether or not a person who smokes also has a tattoo. Given the observed data below, test the claim with a significance level of 0.05, that having a tattoo is independent of whether or not the person is a smoker. Smoker Non-Smoker Totals Has a Tattoo 35 70 Doesn't have a Tattoo 20 85 Totals
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