Under name of group 2 enter: out of state students. under name of response variable enter: time. enter the below data under the heading "enter observations for each group, separated by spaces, or copy & paste from spreadsheet: " group 1: in state students: 2 4 1 2 2 2 4 7 4 1 2 2 1 group 2: out of state students: 1 2 2 3 9 1 12 5 2 2 5 1 make sure that the option "select test statistic: " says "difference of sample means". the test statistic appears at the bottom of the screen. what is the test statistic?