An analyst wants to know whether men and women have different perceptions towards customer service. The perception was measured as 'customer satisfaction' (an index variable-accumulated scores assigned to individual attributes of customer services). Table 1 shows the descriptive statistics, and Table 2 reports the test statistics.

Table 1

Group Statistics Std. Error gender N Mean Std. Deviation Mean Index variable of male 170 2.1716 51615 03959 saticfaction (if contact =1) female 182 2.1136 55006 04077Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means 95% Confidence Interval of the Mean Std. Error Difference F Sig. df Sig. (2-tailed) Difference Index variable of Difference Lower Upper Equal variances saticfaction (if contact = assumed 897 344 1.019 350 309 05802 05695 -.05400 17003 Equal variances not assumed 1.021 349.992 308 05802 05683 -.05375 .16979