Union and Intersection of Event

Front

What does the symbol '∩' represent?

Back

Intersection 'and' - it represents the common outcomes of two events.

Front

What does the symbol '∪' represent?

Back

Union 'or' - it represents all outcomes from both events.

Front

What is a simple event?

Back

An event with one or more outcomes that cannot be broken down further.

Front

Using a Venn diagram, what is A ∪ B if A = {1, 2, 3} and B = {3, 4, 5}?

Back

A ∪ B = {1, 2, 3, 4, 5}.

Front

What is the intersection of two events?

Back

The set of outcomes that are common to both events.

Front

If A = {1, 2, 3} and B = {2, 3, 4}, what is A ∩ B?

Back

A ∩ B = {2, 3}.

Front

What is a compound event?

Back

An event that consists of two or more simple events.

Front

In a survey, if Group A includes students from Math and Science, and Group B includes students from Science and Arts, what is the intersection?

Back

The intersection is the Science department.

Front

What is the formula for the union of two sets A and B?

Back

A ∪ B = A + B - (A ∩ B).

Front

If the probability of event A is 0.3 and event B is 0.5, what is the probability of A ∪ B if A and B are independent?

Back

P(A ∪ B) = P(A) + P(B) - P(A ∩ B) = 0.3 + 0.5 - (0.3 * 0.5) = 0.65.