You now discover that part c of Exercise 75 was just a bad dream. The exam is tomorrow and it will definitely be True-False. Sobered by your nightmare, however, you decide to consider actually doing some studying. You believe that with some studying you can improve your chances of choosing the right answer on any one question to .6. If this is the case, how likely is it that

a. You will pass the exam?

b. You will make a B or better?

c. What would your probability of choosing the right answer on any one question have to be in order to ensure at least a 95% chance of getting a B or better on the exam?