We want to know the mean winning score at the US open gold championship. An internet search gives us all the scores for the history of that tournament, and we create a 95% confidence interval based on a t-distribution. This procedure was not appropriate. Why?
A) Since these are the best players in the world, the scores are probably skewed
B) The entire population of scores was gathered so there is no need to do inference
C) Tiger Woods' recent record-setting scores is probably an outlier
D) The population standard deviation is known, so we should have used a z-model
E) In big golf tournaments the players are not randomly selected
Answer: B