Probability
What is the probability of rolling a 3 or a 4 on a number cube?
what is 1/3 or 33.3%
What is the probability of rolling a 5 on a dice, then spinning yellow, on a spinner that has 4 equal sections (red, yellow, green, and blue)
1/6 x 1/4
what is 1/24 or 4.2%
Rolling a dice, then spinning a spinner.
Independent or Dependent events?
What is Independent
You have 5 sandwich choices, 4 snack choices, and 3 drink choices.
How many meals are possible if each meal includes a sandwich, a snack, and a drink?
what is 60
There are 20 skittles left in a bag. The probability of choosing a green is 15%. How many skittles in the bag are green?
what is 3 green skittles
You have a spinner with the letters A-J. What is the probability of spinning a vowel?
What is 3/10 or 30%
A jar contains 4 blue marbles, 10 green, 8 yellow, and 5 red.
What is the probability of choosing a blue, putting it back, then choosing a yellow?
4/27 x 8/27
What is 32/729 or 4.4%
Pulling a marble from a bag, then replacing it, then pulling another marble.
Independent or Dependent?
What is Independent
You spin a spinner with 10 sections and flip a coin. How many possible outcomes are there?
10 x 2
What is 20
The probability of getting the winning ticket is 65%. What is the likelihood of getting a winning ticket?
A bag of M&M's contains 15 red, 16 yellow, 8 green, 10 blue, and 4 orange pieces of candy. What is the probability of choosing a blue?
10/53 or 18.9%
A jar contains 4 blue marbles, 10 green, 8 yellow, and 5 red.
What is the probability of choosing 2 blue?
4/27 x 3/26
what is 2/117 or 1.7%
Getting a blue M&M from a bag, eating it, then getting another blue M&M.
What is Dependent
You flip 3 coins. How many possible outcomes are there?
2x2x2
What is 8
You roll a number cube 10 times, and roll a 5 six different times.
What is the theoretical probability of rolling a 5?
What is 1/6 or 16.7%
Here are the results of flipping a coin 40 times:
Heads: 32 Tails: 8
What is the theoretical probability of choosing tails?
What is 1/2 or 50%
You flip a coin 4 times. What is the probability of getting all heads?
1/2 x 1/2 x 1/2 x 1/2
what is 1/16 or 6.25%
Getting 2 yellow gumballs in a row from a gumball machine filled with many colors of gumballs.
Independent or Dependent?
What is Dependent
What is the probability of flipping tails, rolling a 4, then rolling another 4 on a number cube?
1/2 x 1/6 x 1/6
what is 1/72 or 1.4%
You flip a coin 30 times. You get tails 24 times. Based on this experiment, how many times would you expect to get tails if you flipped the coin 100 times?
24/30 = x/100
what is 80
You rolled a number cube and here are the results:
1 - 14 times
2 - 10 times
3 - 17 times
4 - 14 times
5 - 10 times
6 - 8 times
What is the experimental probability of choosing 6?
What is 6/73 or 8.2%
A bag contains 3 red blocks, 4 green blocks, and 5 blue blocks.
What is the probability of grabbing 3 blue blocks, without replacing them?
5/12 x 4/11 x 3/10
What is 1/22 or 4/5%
You have a drawer full of many colored socks. Your chance of grabbing a blue then a green.
Independent or Dependent?
What is Dependent
You have lettered tiles A - E. What is the probability of grabbing two vowels?
2/5 x 1/4
what is 1/10 or 10%
You have a basket of 30 socks. You randomly grab a sock, then return it to the basket. You do this 12 times, and you pull out 4 blue socks. Based on this experiment, about how many socks in the basket are blue?
4/12 = x/30
What is 10