A dog trainer compared mean numbers of lessons for two groups of dogs to learn a new trick.
Mean number of lessons Mean Absolute Devlatlon (MAD)
Group A 5
2
Group B 3
N
Which statement about the data is true?
O A. The mean number of lessons for group A is greater than the mean
for group B by 2 MADs.
O B. The mean number of lessons for group A is greater than the mean
for group B by 1 MAD.
O C. On average, the dogs in group B required more lessons than the
dogs in group A.
D. The MAD for group A is more than the MAD for group B.

I NEED HELP ASAP