(12) 1. An exam typically has an average of 86. In a sample of 34 students who took the exam, they had an average of 80 on the exam with a standard deviation of 14. a) At the .01 level did the students do worse than average? (p-value = .009) b) Answer the question in part a) with a yes or no response based on your answer for a)? c) Interpret the p-value found in part a) (4) 2. If type I error is so bad why don't we reduce it to zero? and looked at the distribution of th have? (4) 3. A coin is made so that heads occurs 86% of the time. Find the probability in 20 flips of the coin you would get less than 18 heads