There is a 6-point difference between two sample means. If the two samples have the same variance, which of the following values of variance would make the mean difference easiest to see in a graph showing the two distributions?

There is a 6-point difference between two sample means. If the two samples have the same variance, which of the following values of variance would make the mean difference easiest to see in a graph showing the two distributions? 052:8 052:16 052:2 Q It doesn't matter, since both have the same variance