All the events in the sample space that are not part of the specified event are called Select one: a. joint events. b. the complement of the event. c. simple events. d. the sample space. A multiple-choice test has 30 questions. There are four choices for each question. A student who has not studied for the test decides to answer all questions randomly. What type of probability distribution can be used to figure out his chance of getting at least 20 questions right? Select one: a. General distribution. b. Continuous distribution. c. Normal distribution. d. Binomial distribution. A company has 125 personal computers. The probability that any one of them will require repair on a given day is 0.025. To find the probability that exactly 20 of the computers will require repair on a given day, one will use what type of probability distribution? Select one: a. Continuous distribution. b. Binomial distribution. c. Normal distribution. d. General distribution