Two Means (Dependent) 1. Listed below are brain volumes (cm3) of twins. Test that at 1% significance level that there is a difference between volumes for the first-born and the second-born twins. First Born 1005 1035 1281 1051 1034 1079 1104 1439 1029 1160 Second Born 963 1027 1272 1079 1070 1173 1067 1347 1100 1204

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