adults A sample of ten sets of identical twins were weighed and had their weights recorded in 10 points kilograms The researcher

Question

adults A sample of ten sets of identical twins were weighed and had their weights recorded in 10 points kilograms The researcher wishes to test whether there is a statistically significant difference in adult weight between first born and second born identical twins Source M J Tramo W C Lodtus T A Stukel R L Green J B Weaver and M S Gazzaniga Brain Size Head Size and Intelligence Quotient in Monozygotic Twins Neurology 50 1246 52 Given the design of the study and the question of interest which one of the following computer outputs is relevant to use A O B O C O D O Paired T Test and Cl Sample N Mean StDev SE Mean First Born 10 77 59 23 38 Second Born 10 78 02 17 36 7 39 5 49 Difference 10 0 43 11 83 3 74 95 upper bound for mean difference 6 43 T Test of mean difference 0 vs 0 I Value 0 12 P Value 0 455 Two Sample T Test and Cl Sample N Mean StDev SE Mean First Born 10 77 6 23 4 7 4 Second Born 10 78 0 17 4 5 5 Difference mu First Born mu Second Born Estimate for difference 0 43 95 upper bound for difference 15 64 T Test of difference 0 vs I Value 0 05 P Value 0 482 DF 16 Paired T Test and Cl Sample N Mean StDev SE Mean First Born 10 77 59 23 38 Second Born 10 78 02 17 36 7 39 5 49 Difference 10 0 43 11 83 3 74 95 CI for mean difference 8 89 8 03 T Test of mean difference 0 vs not 0 I Value 0 12 P Value 0 911 Two Sample T Test and Cl Sample N Mean StDev SE Mean First Born 10 77 6 23 4 Second Born 10 78 0 17 4 7 4 5 5

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