1. What is the Probability of A and B? The probability of A and B means that we want to knowthe probability of two events happening at the same time. There’s a couple of different formulas, depending on if you havedependent eventsorindependent events. ...
For non-mutually exclusive events, which can occur simultaneously, the general OR rule must be applied. This involves adding the probabilities of each event and then subtracting the probability of both events occurring together. The general OR rule, which accounts for the overlap (or simultaneous ...
We have seen that in order to find the advantage that results from several simple events, some of which produce a gain and others a loss, it is necessary to add the products of the probability of each favourable event and the gain that it procures, and to subtract from a theira sum ...
Dependent or Independent event? how to Tell. Tip:Look for key phrases in the question that tell you if an event is dependent or not. For example, when you are trying to figure out the probability of two events occurring together and the phrase “Out of this...
Life is full of random events! You need to get a feel for them to be smart and successful. The toss of a coin, throw of a dice and lottery draws...
Many events can't be predicted with total certainty. The best we can say is how likely they are to happen, using the idea of probability.Tossing a CoinWhen a coin is tossed, there are two possible outcomes:Heads (H) or Tails (T)...
These types of events are also known as mutually exclusive events. To find the either/or probability of non-overlapping events, you first find the P(A) probability of event A and then the P(B) probability of event B and use the formula P(A) + P(B). In other words, find the ...
Certain and Impossible events An impossible event has a probability of 0. A certain event has a probability of 1. The probability of any event must be0≤P(E)≤10≤P(E)≤1 Try It In the course of this section,if you compute a probability and get an answer that is negative or gr...
Having a probability of 1 means guaranteed certainty. Obviously, for a variety of deep logical reasons, the events “A” and “not A” are disjoint and have no overlap. The OR rule, discussed in the last post, implies: P(A) + P(not A) = 1 Subtract the first term to isolate P(no...
The probability of the union of two mutually exclusive events is the sum of their individual probabilities. If event A has a probability of 0.3 and event B has a probability of 0.4 and they are mutually exclusive, the probability of A or B is ___. A. 0.12 B. 0.7 C. 0.1 D. 0.15 ...