# Chi square test

One possible side effect of air pollution is genetic damage. A study designed to examine this problem exposed one group of mice to air near a steel mill and another group to air in a rural area and compared the number of mutations in each group. Here are the data for a mutation at the Hm-2 gene locus:

Mutation Steel mill air Rural air

Yes 30 23

No

Total 96 150

a). Fill in the missing entries in the table.

Mutation Steel mill air Rural air

Yes 30 23

No 66 127

Total 96 150

b). Summarize the data numerically and graphically.

c). Is there evidence to conclude that the location is related to the occurrence of mutations? Perform the significance test and summarize the results.

https://brainmass.com/statistics/chi-squared-test/evidence-conclude-significance-tests-207240

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One possible side effect of air pollution is genetic damage. A study designed to examine this problem exposed one group of mice to air near a steel mill and another group to air in a rural area and compared the number of mutations in each group. Here are the data for a mutation at the Hm-2 gene locus:

Mutation Steel mill air Rural air

Yes 30 23

No

Total 96 150

a). Fill in the missing entries in the table.

Mutation Steel mill air Rural air

Yes 30 23

No 66 127

Total 96 150

b). Summarize the data numerically and ...

#### Solution Summary

The solution provides step by step method for the calculation of Chi square test. Formula for the calculation and Interpretations of the results are also included.