Fortunately regression to mean ensures that two completely stupid parents do not always produce a completely stupid child 
Otherwise the human race would have been doomed a long time ago.
That would be B), but given that I tend to be right even when choosing randomly I would go for C)
Another alternative is 0% given that 33.333% is not even listed, it’s 1 out of 3 choices after all 
Good one
@Peter isn’t this the UK exam grading algorithm!
It is probably the exam grade inflation factor
I think the answer is B because there are two 25% options so if you choose randomly you will get 50%… but I am not sure.
Yes but there is a correct 50% as you have a 50% probability of getting two out of four – quite clever because depending on the frame model you have a 75% probability as there are three potentially correct answers, but 75% is not an answer!
Peter wrote:
I think the answer is B because there are two 25% options so if you choose randomly you will get 50%… but I am not sure.
That is what I was thinking (you could argue there are only two possibilities for a random answer either CORRECT or WRONG, so 50% chance which is B ! )
