from the OP
BAN THIS PERSON 48 negatives
I formed my "guess" on the balance of probability
ie..
that 48 sellers had left negative postitives and the probability that at least 2 opened NPB disputes is a little greater than the probability that 48 out of 48 did not
... I wondered how others formed their opinion???
TELL ME AND I WILL FORGET, SHOW ME AND I MAY REMEMBER,, INVOLVE ME AND I WILL UNDERSTAND Confucius 450bc
