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mathematical expression for the probability of an event a occurring. B Im not sure about this part but is exactly two of the first four events occur equivalent to saying the complement of at most one of the first four events occur intersection at least three of the first four events occur. The probability of event A occurring given that event B has already occurred.
P AB the conditional probability. Its much easier to understand by looking at some more examples. In the course of this section if you compute a probability and get an answer that is negative or greater than 1 you have made a mistake and should check your work.
The mathematical expectation is the events which are either impossible or a certain event in the experiment.
The Probability of an event is the number of ways event can occur divided by the total number of possible outcomes. D Let D event of getting a number less than 7. The odds take the probability of an event occurring and divide it by the probability of the event not occurring. P B the probability of event B.