Mrs. hudson plans to give a 10 question multiple choice exam in which each question has 4 options. each question counts for 1 point. a score of 8 or more is a passing score while 7 or less is a failing score.
the probabilities of guessing a certain number of questions correctly are listed in the table below.
compute the probability of answering 8 or more questions correctly by calculating the probability with a direct sum and by using complements.
me figure this out. i am lost.