What does a given B mean?

Conditional probability: p(A|B) is the probability of event A occurring, given that event B occurs. The probability of event A and event B occurring. It is the probability of the intersection of two or more events. The probability of the intersection of A and B may be written p(A ? B).

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What is P A intersection B?

How do you calculate F or PE? For the formula P (E or F) = P (E) + P (F), all the outcomes that are in both E and F will be counted twice. Thus, to compute P (E or F), these double-counted outcomes must be subtracted (once), so that each outcome is only counted once. The General Addition Rule is: P (E or F) = P (E) + P (F) ? P (E and.

Also, how do you calculate b or pa?

The probability of two disjoint events A or B happening is: p(A or B) = p(A) + p(B). Accordingly, what are the 5 rules of probability? Basic Probability Rules Probability Rule One (For any event A, 0 ? P(A) ? 1) Probability Rule Two (The sum of the probabilities of all possible outcomes is 1) Probability Rule Three (The Complement Rule) Probabilities Involving Multiple Events. Probability Rule Four (Addition Rule for Disjoint Events)

People also ask can 1 be a probability?

A probability of 1 means that the event will happen. If the probability of a road traffic accident was 1 there would be nothing you could do to stop it. It will happen. In practice probabilities associated with everyday life events lie somewhere between 0 and 1.