Chi-square test for a relationship

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Reference no: EM131818150

Does whether or not a person has ears pierced tell us something about whether the person wears contacts, glasses, or neither?

a. Use software to access the student survey data, and carry out a chi-square test for a relationship between the two variables; report the chi-square statistic.

b. Report the P-value, which provides evidence that the variables are related.

c. Which sampled group has a higher proportion wearing glasses: those who do or those who do not have ears pierced?

d. Explain why gender is a possible confounding variable in the relationship between pierced ears and eyewear.

e. Use software to separate data on ears pierced and eyewear for males and females. Report the P-value for females.

f. State whether or not there is evidence that for females, having ears pierced or not is related to eyewear.

g. Report the P-value for males.

h. State whether or not there is evidence that for males, having ears pierced or not is related to eyewear.

Reference no: EM131818150

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