A student takes two statistics exams. Her chance of passing the first exam is 70%, so her chance of failing the first exam will be: 1-70% = 30%. If the student passes the first exam, then her chance of passing the second exam would be 90%. If she fails the first exam, then her chance of passing the second exam is Ohly 400/0. a) Show the probability tree summarizing these trials of passing or failing exams. b) Her friends will celebrate with her if she passes both stats exams. What is the probability of that happening? 0) If she fails both stats exams, the instructor of this course will give her extra exercises which could be helpful for her next stats exam. What is the probability of that happening