Probability Questions & Answers

Probability Questions & Answers "Conditional Probability" states that ... - ANSWER: For whatever reason that we know event B is true or occurred, then given this condition, what is the probability that "A" happens. "With Replacement" means that all choices made are ... - ANSWER: "independent" of the choices made prior to it or after it as well. "Without Replacement" means that all choices made are ... - ANSWER: "dependent" of the choices made prior to it. A more specific and direct way of Picking Numbers is to ... - ANSWER: Back Solve. When Back solving you simply pick one of the 5 answer choices and plug it back into the question. Remember that the numerical answer choices are always in ascending or descending order. As a result always start testing with answer choice (B), and if (B) turns out to be too small then try answer choice (D). Back solving allows you to find the correct answer without ever needing to test more than two of the answers. Abstract notation for conditional probability reads .. - ANSWER: P(AIB). which reads what is the probability of A, given B. Where B is the condition we impose, and we want to find the probability of A, given that B has already happened. An ideal scenario where you can use the compliment rule is when you are asked to find a probability, and once all probabilities are listed out, there is only .... - ANSWER: one situation that you do not want to occur. Ex: you flip three coins, but you lose if you flip 3 tails and you automatically win when you flip one heads, what is the probability of winning. Possibilities include, HTT, TTH, THT, TTT. The final situation is the only one we do not want to occur, and its probability is (1/2)^3= 1/8. So P(win)= 1-(1/8)....................................