Page 2 of 22 Group Statistics Bootstrap BCa 95% Confidence Interval Species Statistic Bias Std. Error Lower Upper Dog-Like Behaviour Dog N 20 Mean 28.0500 .0202 2.3704 23.5990 32.6475 Std. Deviation 10.98072 -.42579 1.45425 8.27237 12.47959 Std. Error Mean 2.45536 Man N 20 Mean 26.8500 -.0197 2.2303 23.1176 30.9093 Std. Deviation 9.90096 -.41885 1.95349 6.58720 12.55587 Std. Error Mean 2.21392 a. Unless otherwise noted, bootstrap results are based on 1000 bootstrap samples Independent Samples Test Levene's Test for Equality of Variances +-test for Equality of Means 95% Confidence Interval of the Mean Std. Error Difference of Sig. (2-tailed) Difference Difference Lower Upper Dog-Like Behaviour Equal variances 1.149 .291 ,363 38 ,719 1.20000 3.30609 -5.49284 7.89284 assumed :qua variances 363 37.600 719 1.20000 3.30609 -5.49518 7.89518 not assumed 9.1. Why do we use an independent-samples t-test? Know if groups are different than your variable of interest. Must be two groups. 9.2. Do you meet the equal variance assumption? How do you know? Report your significance value. Yes because the means are equal at 1.20000 9.3. Are the differences between the groups significant? How do you know? Was the researcher's hypothesis supported? How do you know? Report the result in APA format (be sure to include the degrees of freedom (df))