Scores on a statistics final in a large class were normally distributed with a mean of 71 and a standard deviation of 7. Find the following probabilities, round to the fourth. https://istats.shinyapps.io/NormalDist/ a) What is the probability one randomly chosen score is greater than 81 Would it be unusual for this to happen? (Hint: An event is unusual when its probability is less than 0.05) Select an answer b) What proportion of scores were below a 54? Would it be unusual for this to happen? (Hint: An event is unusual when its probability is less than 0.05) Select an