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Suppose you are taking an exam with 12 questions and you are required to get 2 or more right answers to pass. Complete parts a through d below. a. With a 12-question true/false test, what is the probability of getting at least 2 answers correct by guessing? The probability of getting at least 2 answers correct is (Type an integer or decimal rounded to three decimal places as needed.) b. With a 12-question multiple-choice test where there are four possible choices for each question, what is the probability of getting at least 2 answers correct by guessing? Only one of the choices is correct for each question. The probability of getting at least 2 answers correct by guessing is 56. (Type an integer or decimal rounded to three decimal places as needed.) c. With a 12-question multiple-choice test where there are five possible choices for each question, what is the probability of getting at least 2 answers correct by guessing? Only one of the choices is correct for each question. The probability of getting at least 2 answers correct by guessing is. (Type an integer or decimal rounded to three decimal places as needed.) d. Which test (of those described in parts a, b, and c in this exercise) would be easiest to pass by guessing, which would be hardest, and why? The true / false test would be easiest to pass by guessing, since the probability of getting at least 2 answers correct by guessing on that test is |greatest. The multiple-choice test with four choices would be hardest to pass by guessing, since the probability of getting at least 2 answers correct by guessing on that test is least