Show:
Theoretical
Experimental
Counting Principle
Vocabulary
Predictions
100
Maria is flipping a coin and spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the coin will land on heads and the spinner will land on the letter "A"?
1/8 or 0.125, or 12.5%
100

Sammy conducts an experiment with three quarters. He counts the number of heads and tails for each flip of the three quarters. Sammy records the results as follows: HHH = 10 HHT = 15 HTT = 18 TTT = 7 According to Sammy's results, what is the probability of flipping two heads and a tail? (answer in simplest form)

3/10

100
You are trying to decide what to wear to school. You know you have a green pair of pants, a red pair, and a blue pair. You also have a brown shirt, a plaid shirt, and a yellow shirt. How many different outfit combinations can you make?
9
100
Define "theoretical probability."
It is the probability of what should occur.
100
Marcia performs an experiment in which she pulls a marble from a bag. In her experiment, she finds that she is twice as likely to pull a red marble as a blue marble. If Marcia pulls 10 red marbles, how many blue marbles does she pull?
5 blue marbles
200

The classic wood carousel at Carousel Park in Hampton, VA has 32 jumping horses and 16 standing horses. What is the probability of randomly selecting a jumping horse?

2/3, or 0.67, or 67%

200

Talia plays a board game with a friend. She uses a frequency table to record the results for each roll of a standard number cube. 1 = IIII, 2 = II, 3 = IIIIII, 4 = IIIII, 5 = IIIIIIII, 6 = I. Based on the data in the frequency table, what is the probability of rolling a five on the next roll?

4/13

200
What is the number of possible outcomes for spinning one spinner with 8 equal sections and another spinner with 6 equal sections?
48 possible outcomes
200
Define "experimental probability."
The probability of what actually occurs.
200
A middle school has 200 boys and 300 girls in 7th grade. The principal randomly selects 45 seventh-grade students to take part in a lunch survey. How many of the seventh-grade students selected for the survey should the principal expect to be boys?
18
300

What is the probability of rolling two odd numbers in a row with a standard number cube?

1/4, or 0.25, or 25%

300

A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed below. What is the experimental probability of selecting the letter "E"? A = 16 E = 11 I = 29 O = 19 U = 25

11/100 or 0.11, or 11%

300
Amiya and Keyshawn are candidates for class president of the 7th grade. Ajaye, Chishon, and Laura are candidates for vice president. How many winning combinations are possible?
6
300
Describe the difference between events that are certain, likely, equally likely, unlikely, or never going to happen.
Certain would be 100% of the time, likely is anything greater than 50% of the time, equally likely is exactly 50% of the time, unlikely is anything less than 50% of the time, and never is anything that has a 0% chance of occuring.
300
At a magic show, a member of the audience is asked to randomly select a card from a standard deck of playing cards. What is the likelihood of the audience member choosing a spade or a heart?
Equally likely
400

There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaces. A second marble is then taken out and not replaced. What is the probability both marbles that were taken out are red?

1/5, or 0.20, or 20%

400
Pedro recorded the types of birds that visit his bird feeder. Based on the results below, what is the probability the next bird will be a chickadee? Woodpecker = 3 Chickadee = 5 Cardinal = 1 Sparrow = 13 Blue Jay = 3
1/5, or 0.20, or 20%
400
Ms. French is packing for a trip. She packs a white blouse, a pink blouse, a blue blouse, and a green blouse. She also packs a black suit, a navy blue suit, and a gray suit. What is the probability that the first outfit she wears is the gray suit with a pink blouse?
1 out of 12
400
Define "independent event."
When one event occurs and the item is replaced before the second event occurs.
400
How likely is it that a number cube is tossed and lands on any number 1-6?
Certain
500

Davina spins a spinner with 5 equal sections numbered 1-5 and she spins another spinner with 5 equal sections with the letters A-E. What is the probability she will spin a 4 and a B?

1/25 or 0.04, or 4%

500
A six-sided die is thrown 50 times. Using the list below, how does the theoretical probability of rolling a 3 compare to the experimental probability of rolling a 3? Number on Die How Many Times it Landed on that Number 1 8 2 6 3 7 4 12 5 10 6 7
The theoretical probability is higher than the experimental probability. (Theoretical = 17%, Experimental = 14%)
500
What is the probability of rolling three 4's in a row on a number cube?
1/216
500
Define "dependent event."
When one event occurs and that item is not replaced before the second event occurs.
500
To win a board game, Emily must first roll one die and land on a 6. Then she must roll another die and land on a 4. If Emily rolls the two dice a total of 144 times, how many times should she expect the dice to land on the winning combination of 6 and 4?
4