Answer the question.
What is the greatest possible value of Diff, and what selection of ping-pong balls for Group A corresponds to that value?
What is the smallest (most negative) possible value of Diff, and what selection of ping-pong balls for Group A corresponds to that value?
If these 6 observations represent the burn times of 6 candles (in minutes), explain what a Diff value of 6 means in terms of (a) which group (A or B) has the longer average burn time and (b) the amount of time by which that group’s mean exceeds the other group’s mean.