Simple & Independent Probability
You draw one marble from a bag of 5 red and 3 blue marbles. What is the probability that you will draw a blue marble?
3/8
A box has 4 green and 6 yellow tiles. You pick one tile, do not replace it, and pick a second tile. What is the probability that both tiles will be green?
4/10 x 3/9 = 12/90 = 2/15
List the sample space when flipping one coin.
H, T = 2
What does the word "probability" mean?
You roll a regular six-sided dice. What is the probability that you will roll an even number?
3/6=1/2
There are 3 chocolate and 2 vanilla donuts in a box. You pick two without replacement. What is the probability that the first is a chocolate donut and the second is vanilla?
3/5 x 2/4 = 6/20 = 3/10
Determine the number of possible outcomes for rolling a regular six-sided die and flipping a coin.
6 x 2 = 12
What does "theoretical probability" mean?
what should happen
You roll a regular six-sided dice and flip a coin. What is the probability of rolling a 4 and flipping heads?
1/6 x 1/2 = 1/12
A jar contains 2 red, 3 blue, and 5 white beads. You pick two beads without replacement. What is the probability that both beads are blue?
3/10 x 2/9 = 6/90 = 1/15
A bag contains the letters A and B. You draw two letters with replacement. List the sample space.
AB, BA, AA, BB
What does "experimental probability" mean?
what actually happens
A bag of marbles contains 4 green marbles, 3 yellow marbles, and 5 red marbles. You grab one marble from the bag, replace it, and grab another. What is the probability that you will get a yellow marble both times?
3/12 x 3/12 = 9/144 = 1/16
Fill in the blanks: Possible outcomes can also be called ____ and ____.
sample space and combinations