Independent Samples Test Levene's t-test for Equality of Means Test for Equality of Variances F Sig. df Sig. (2- Mean Std 95% Confidence tailed) Difference Error Interval of the Differenc Difference e Lower Upper Equal variances 167 .688 -1.924 18 070 -11.200 5.821 -23.430 1.030 test scor assumed e Equal variances -1.924 17.71 .071 -11.200 5.821 -23.444 1.044 not 3 assumed H a) State the 95% confident interval for the above study. (3 marks) b) Is there any difference in test score between right-handed and left-handed people? Give your reason. (2 marks)