Unit 8 FLASHCARD (Open Notes & GaDOE)

Front

What is the formula for calculating the probability of the union of two events, P(A⋃B)?

Back

P(A⋃B) = P(A) + P(B) - P(A⋂B)

Front

What is the probability of drawing 2 green marbles from a bag containing 4 blue, 4 red, and 4 green marbles without replacement?

Back

Front

What is marginal probability?

Back

Marginal probability is the probability of an event occurring without consideration of any other events.

Front

How do you calculate experimental probability?

Back

Experimental probability is calculated as the number of successful outcomes divided by the total number of trials.

Front

If a factory produces 1700 bottles a day and tests a sample of 250 units with 7 defective, what is the expected number of defective bottles in a week?

Back

333 bottles/week

Front

What is the probability of an education major if the total number of education majors is 315 out of 1000 students?

Back

31.5% (calculated as \frac{315}{1000} \times 100)

Front

Define dependent probabilities.

Back

Dependent probabilities are probabilities where the outcome of one event affects the outcome of another event.

Front

What is the probability of an event that is certain to happen?

Back

1.00 (or 100%)

Front

What is the probability of an event that is impossible?

Back

0.00 (or 0%)

Front

How do you find the probability of drawing a specific color marble from a bag?

Back

Divide the number of that color marbles by the total number of marbles.