Homework - "OR" Probability

Front

What is 'OR' probability?

Back

'OR' probability refers to the probability of either event A or event B occurring. It is calculated differently based on whether the events are mutually exclusive or overlapping.

Tags

CCSS.HSS.CP.B.7

Front

How do you calculate P(A or B) for mutually exclusive events?

Back

For mutually exclusive events, P(A or B) = P(A) + P(B).

Tags

CCSS.HSS.CP.B.7

Front

How do you calculate P(A or B) for overlapping events?

Back

For overlapping events, P(A or B) = P(A) + P(B) - P(both).

Tags

CCSS.HSS.CP.B.7

Front

What are mutually exclusive events?

Back

Mutually exclusive events are events that cannot happen at the same time.

Tags

CCSS.HSS.CP.A.5

Front

What are overlapping events?

Back

Overlapping events are events that can occur at the same time.

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Front

If a die is rolled, what is P(multiple of 2 or a multiple of 3)?

Back

P(multiple of 2 or a multiple of 3) = P(multiple of 2) + P(multiple of 3) - P(both) = 3/6 + 2/6 - 1/6 = 4/6.

Tags

CCSS.HSS.CP.B.7

Front

What is the probability of drawing a 2 or an ace from a standard deck of cards?

Back

The probability is calculated as P(2) + P(ace) = 1/13 + 1/13 = 2/13, since these events are mutually exclusive.

Tags

CCSS.HSS.CP.B.7

Front

What is the formula for calculating the probability of 'A or B' when events are not mutually exclusive?

Back

The formula is P(A or B) = P(A) + P(B) - P(both).

Tags

CCSS.HSS.CP.B.7

Front

What does it mean if two events are independent?

Back

Two events are independent if the occurrence of one event does not affect the occurrence of the other.

Tags

CCSS.HSS.CP.A.5

Front

What is the probability of rolling a number less than 5 on a die?

Back

The probability is 4/6, since the numbers less than 5 are 1, 2, 3, and 4.

Tags

CCSS.7.SP.C.7B