In: Statistics and Probability
Of the 300 people that teach at Belmont, 225 are practicing Catholics and 75 are not practicing Catholics. 90% of the practicing Catholics decided to get ashes on Ash Wednesday, and 30% of the non-practicing Catholics received ashes on Ash Wednesday
Joe got ashes. What is the probability that Joe is not Catholic.
A. Solve using Bayes theorem
B. Solve using a tree diagram