Finding the chisquare test statistic value for the given set of values
One possible side effect of air pollution is genetic damage. A study designed to examine this problem exposed one group of mice air near a steel mill and another group to air in a rural area. The study compared the number of Hm2 gene mutations in each group. The data table is below.
Location

Mutation

Steel Mill Air

Rural Air

Yes

30

23

No



Total

96

150

Work out the chisquare statistic.