Question

SET Took None Small=0.0001 SUGRY=Hone THREADS AUTO TriBoth DIGITGROUPING NO LEADEROS TABLERENDER=light. T-TEST GROUPS-sex(12) /MISSINGEANALYSIS / VARIABLES-hral CRITERIA CI(.95). T-Test [DataSetl] E:\TEACHING\00304\2012_GSS Data setsav Group Statistics RESPONDENTS SEX MALE Std Dewi NUMBER OF HOURS WORKED LAST WEEK Sid Em N 432 425 Mean 20 35 85 1 FEMALE 4 677 15 216 Independent Samples Test Levene's Test for Equality of Variances est for Equality of Neang Con Derence the Si tie Sidemar Denta NUMBER OF HOURS WORKED LAST WEEK Mean n e 5.716 Equal variances 7719 Equal variances not assumed 5599 853.461 1021 7 12 1720

Answer 1

The null and alternative hypotheses: Họ: A = 12 H: 1, + H2 The value of test statistics: t= 5.601 The degrees of freedom= 856 The p-value = 0.000 Conclusion: The p-value of independent sample t test is less than 0.05. Hence we reject null hypothesis at 5% level of significance and conclude that there is significant difference in average number of hours worked last week between male and female.