Geo Unit 8 Pre Flashcard1

Front

What is the intersection of sets X, Y, and Z?

Back

The intersection of sets X, Y, and Z, denoted as (X ∩ Y ∩ Z), is the set of elements that are common to all three sets.

Front

If A = {1, 3, 5, 7, 9} and B = {2, 3, 5, 7}, what is A ∩ B?

Back

A ∩ B = {3, 5, 7}, which includes the elements that are present in both sets A and B.

Front

What is the probability of selecting a female or a person with private insurance from a group?

Back

The probability of selecting a female or a person with private insurance can be calculated using the formula P(A or B) = P(A) + P(B) - P(A and B).

Front

How do you calculate the probability of rolling a sum greater than 8 or at least one roll being a 5 with a number cube?

Back

To find this probability, calculate the total outcomes for both conditions and use the addition rule for probabilities.

Front

What is the formula for calculating the probability of either of two events occurring?

Back

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

Front

Define the term 'probability'.

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 and 1.

Front

What does it mean if the probability of an event is 0.27?

Back

A probability of 0.27 means there is a 27% chance that the event will occur.

Front

What is the significance of the intersection of two sets?

Back

The intersection of two sets contains all elements that are common to both sets, which helps in understanding relationships between different groups.

Front

How do you interpret the result of a probability calculation?

Back

The result of a probability calculation indicates the likelihood of an event occurring, with values closer to 1 indicating higher likelihood.

Front

What is the probability of Flight 9876 or Flight 123 being late if P(A) = 0.27, P(B) = 0.11, and P(A and B) = 0.09?

Back

Using the formula P(A or B) = P(A) + P(B) - P(A and B), the probability is 0.29.