Is there a difference between urban and rural jurisdictions in the hiring of female police officers? In California, for urban jurisdictions (n=77), the mean percentage of female officers is 9.65 (s=4.17). For non-urban jurisdictions (n=84), there is a mean of 6.8 percentage of female officers (s=4.16). Using an alpha level of .01 in a two-tailed test, which is the most appropriate technique for this hypothesis test? Z-score test, single-sample t-test, independent samples t-test, or related samples t-test?