if the mean is greater than theedian which of the following is true Left: 1:13:55 Ashia Rhodes: Attempt 1 All true experimental group designs require a pretest and a posttest. O True False Save Question 8 (0.5 points) The threat to internal validity of selection bias in group experimental designs is reduced by randomization. e True - False Save Question 9 (0.5 points) Compensatory rivalry occurs when control group members are aware that they are being denied some their efforts by way of compensation and so 흐 흐 흐 +5 7:20 Left: 1:13:55 Ashia Rhodes: Attempt 1 All true experimental group designs require a pretest and a posttest. O True False Save Question 8 (0.5 points) The threat to internal validity of selection bias in group experimental designs is reduced by randomization. e True - False Save Question 9 (0.5 points) Compensatory rivalry occurs when control group members are aware that they are being denied some their efforts by way of compensation and so 흐 흐 흐 +5 7:20