Which of the following is true about a probability? Group of answer choices It ranges between -1 and +1 It ranges between 0 and 100 It ranges between 0 and +1 None of the above is true Question 21 pts For two disjoint events, A and B, i.e., they cannot occur at the same time, which of the following is true? Group of answer choices Pr (A or B) = Pr (A) X Pr (B) Pr (A or B) = Pr (A) I Pr (B) Pr (A or B) = Pr (A) + Pr (B) Pr (A or B) = Pr (A) - Pr (B) Question 31 pts Which of the following is NOT a denition of probability? Group of answer choices It is the likelihood of an event occurring It is measured by the ratio of the event to the total number of possible events It is measured by the ratio of the event to the total number of non-events All of the above are true Question 41 pts One of the reasons why we can use a one-sample 2 test for testing means is that the sampling ofp is distributed as a Normal distribution. Group of answer choices True False