Examine the following example SPSS results table: Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means F Sig t df Sig Mean (2-tailed) Difference Std. Error Difference 95% Confidence Interval of the Mean Lower Upper TAPSPEED Equal variances 319 .582 -2.845 13 .014 -14.00 4.92 -24.63 -3.37 assumed Equal variances -2.927 11.865 .013 -14.00 4.78 -24.44 -3.56 not assumed What is the obtained t-statistic? A) t = 0.582 B) t = -14.00 C) t = 0.319 D) t = -2.845
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State the results of the t-test using the "Assume equal variances" row. Interpret the statistical results against the null hypothesis and state whether it is accepted or rejected. Independent Samples Test Levene's Test for Equality of Variances t-test for Equality of Means F Sig. t df Sig. (2-tailed) Mean Difference Std. Error Difference 95% Confidence Interval of the Difference Lower Upper gpa Equal variances assumed .095 .758 1.999 103 .048 .28090 .14055 .00215 .55965 Equal variances not assumed 1.961 79.985 .053 .28090 .14326 -.00419 .56599
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