Unit 4 Probability Vocabulary

two sets is a new set that contains all of the elements that are in at least one of the two sets.

• Intersection

• Union

• Sample Space

• Complement

The __________ of events A and B, denoted A∩B is the collection of all outcomes that are elements of both of the sets A and B. It corresponds to combining descriptions of the two events using the word “and.”

• Union

• Intersection

• Independence

• Mutually Exclusive

The _________ of an event A in a sample space S,

denoted Ac, is the collection of all outcomes in

S that are not elements of the set

A. It corresponds to negating any description in words of the event A.

• Union

• Intersection

• Mutually Exclusive

• Complement

The set of all possible outcomes in an experiment / scenario

• Complement

• Union

• Sample Space

• Mutually Exclusive

Two events that have no outcome in common

• Complement

• Intersection

• Addition Rule

• Mutually Exclusive

states the probability of two events is the sum of the probability that either will happen minus the probability that both will happen.

• Conditional Probability

• Independence

• Addition Rule

• Mutually Exclusive

________is the probability of one event occurring with some relationship to one or more other events

• Independence

• Addition Rule

• Union

• Conditional Probability

If the occurrence of one does not affect the probability of occurrence of the other

• Independence

• Sample Space

• Dependent

• Intersection

Conditional Probability Rule for Independent Events (formula) or P(A|B)

•  $\frac{P(A∩B)}{P(B)}$ 
  
  

•  $\frac{P(A)}{P(B)}$  

•  $\frac{P(B)}{P(A)}$  

•  $\frac{P(B)}{P(A∩B)}$