1. [-/2 Points] DETAILS BBUNDERSTAT13 4.R.006. 0/6 Submissions Used You are given the information that P(A) = 0.30 and P(B) = 0.40. (a) Do you have enough information to compute P(A or B)? Explain. O No. You need to know the value of P(A) = P(B). O No. You need to know the value of P(A) + P(B). No. You need to know the value of P(A and B). O Yes. This probability is equal to 0.70. (b) If you know that events A and B are mutually exclusive, do you have enough information to compute P(A or B)? Explain. Yes. P(A and B) = 0, so P(A or B) = P(A) + P(B). O No. Knowing the events are mutually exclusive does not provide any extra information. Yes. P(A and B) = 0, so P(A or B) = P(B) = P(A). Yes. P(A and B) = 0.12, so P(A or B) = P(A) + P(B) -0.12. Need Help? Read It MY NOTES ASK YOUR TEACHER 2. [-/1 Points] DETAILS BBUNDERSTAT13 4.R.008. 0/6 Submissions Used MY NOTES ASK YOUR TEACHER For a class activity, your group has been assigned the task of generating a quiz question that requires use of the formula for conditional probability to compute P(BA). Your group comes up with the following question "If P(A and B) = 0.40 and P(A) = 0.20, what is the value of P(B | A)?" What is wrong with this question? Hint: Consider the answer you get when using the correct formula, P(B | A) = P(A and B)/P(A). 60F O P(A and B) cannot be greater than P(A), because this yields a probability greater than 1 for the answer. O The question should be looking for P(A|B) not P(B | A). OP(A and B) should be larger. O P(A and B) cannot be greater than P(A), because this yields a probability less than 0 for the answer. Need Help? Read It 99+