Assume that random guesses are made for eight multiple choice questions on an SAT test, so that there are = 8 trials, each with probability of success (correct) given by = 0.20. Find the
indicated probability for the number of correct answers.
a). Find the probability that the number x of correct answers is exactly 7.
b). Find the probability that the number x of correct answers is at least 4.
c). Find the probability that the number x of correct answers is fewer than 3.
d). Find the probability of no correct answers.
e). Find the probability that at least one answer is correct.