1. Suppose a biology student is about to take an exam that is entirely multiple choice, where each question has 5 answer choices. This student only studied 70% of the material that is covered on this exam, so let us assume that there is a 70% chance that she knows the correct answer to any given question. If she does not know the answer, she will choose an answer at random. a. If she answered a question on the exam correctly, what is the probability it was just because she guessed? (3pt) b. If the exam has a total of 30 questions on it, what is the average number you would expect her to get wrong? (3pt)