Suppose it is hypothesized that the scores of the MBA students at TRU are more variable than the scores of BBA students at the same university. Below are the scores of two independent random samples. Sample Size Sample Mean Sample Variance MBA 9 520 38 BBA 8 540 20 At the 5% level of significance, the null hypothesis O should be rejected. O should not be reversed. O should not be rejected. should be reversed.