WGU statistics Exam Questions With Complete Solutions
WGU statistics Exam Questions With Complete Solutions The probability of any event is between one and o. What is the equation for this? - Correct Answer For any event A, 0 ≤ P(A) ≤ 1. The sum of all possible probabilities is___? - Correct Answer One, the equation is :P(S) = 1 What is the complement rule? or the probability that an event does not occur is 1 minus the probability that it does occur. - Correct Answer P(not A) = 1 - P(A) In probability, "OR" means either one or the other or both. - Correct Answer P(A or B) = P(event A occurs or event B occurs or both occur) Two events that cannot occur at the same time are called - Correct Answer disjoint or mutually exclusive The Addition Rule for Disjoint Events: - Correct Answer If A and B are disjoint events, then P(A or B) = P(A) + P(B). P(A and B) = - Correct Answer P(event A occurs and event B occurs) The idea of disjoint events is - Correct Answer is about whether or not it is possible for the events to occur at the same time The idea of independent events is about - Correct Answer whether or not the events affect each other in the sense that the occurrence of one event affects the probability of the occurrence of the other If A and B Disjoint - Correct Answer A and B can not be indepentdent If A and B are two independent events (Multiplication Rule) - Correct Answer P(A and B) = P(A) * P(B).
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