Well you did divide 500 by 2 - getting 250. And you should have multiplied the 500 tails events by 2 (the number of interviews that were conducted after each “tails” event) - getting 1000 “tails” interviews in total. 250 has nothing to do with this problem.
Well you did divide 500 by 2 - getting 250. And you should have multiplied the 500 tails events by 2 (the number of interviews that were conducted after each “tails” event) - getting 1000 “tails” interviews in total. 250 has nothing to do with this problem.