Theoretical
Experimental
Counting Principle
Vocabulary
Independent vs Dependent
100
Maria spinning a spinner. The spinner has 4 equal sections labeled A-D. What is the probability the spinner will land on the letter "A"?
1/4 or 25%
100
Hasaan has a spinner with 5 equal sections, each a different color. After only 10 spins, the pointer had landed on red 4 times. How does the experimental probability of landing on red compare to the theoretical probability of landing on red?
40% (experimental) is much higher than 20% (theoretical)
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.

What you THINK is going to happen. (Fact)

100
A bag contains 4 white beads, 6 red beads, 5 yellow beads, and 5 blue beads. One bead is selected, kept, and another bead is selected. Find P(red, then red)
3/38
200
A bag of marbles has 3 red marbles, 5 black marbles, and 2 white marbles. What is the probability of pulling out a red marble?
3/10 or 30%
200
Ms. Catalano has a non-uniform spinner where red is 1/2 the spinner, blue is 1/4, and black is 1/4. After 500 spins, about how many times would you expect red to show up?
250 times
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.

What ACTUALLY happened.

200
A bag contains 4 white beads, 6 red beads, 5 yellow beads, and 5 blue beads. One bead is selected, kept, and another bead is selected. Find P(blue, then yellow)
5/76
300
I have a pack of Starburst. There are 8 orange, 3 red, and 1 yellow. What is the probability that I pick a pink one? Impossible, unlikely, likely, or certain?
Impossible
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 Kyshon are candidates for class president of the 7th grade. Cijae, William, and Ashley are candidates for vice president. How many winning combinations are possible?
6
300
Describe the difference between events that are certain and events that are unlikely.
Events that are certain WILL happen, events that are unlikely may happen but have around a 25% chance.
300
A bowl contains 8 pennies, 7 nickels, and 10 dimes. Elyse removes one coin at random from the bowl and does not replace it. She then removes a second coin random. What is the probability that both will be nickels?
7/100
400
There are 7 red marbles, 2 green marbles, and 1 yellow marble in a box. What is the probability I pick a green or a red one?
9/10
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. Tricia 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 Events.
The probability of one DOES NOT affect the probability of the other event. 
400
There are 26 prize tickets in a bowl, labeled A to Z. What is the probability that a prize ticket with a vowel will be chosen, not replaced, and then another prize ticket with a vowel will be chosen? Does this represent an independent or dependent event? Explain.
2/65; dependent event - the second event is impacted by the first
500

Jarvonya 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 deli owner records the following information about his customers: 48 ordered Turkey, 25 ordered Vegetarian, 27 orded Ham. If he sells 20 sandwiches today about how many of them will be Turkey?

About 10 (9.6 to be exact but you can't sell a piece of a sandwich!)

500

Mr. Sean is working on the summer school schedule. His choices are listed below. 1st period-Spanish or Math 2nd period-Science, gym, or art 3rd period-English or Social Studies Create a tree diagram showing all the possible combinations he can create.

Spanish Math Science Gym Art Science Gym Art Ela SS ELA SS ELA SS ELA SS ELA SS ELA SS 12 combinations

500
Define Dependent Events.
The probability of the first event DOES affect the probability of the second. WITHOUT replacement.
500
You have a shuffled deck of cards (no jokers), you pick three cards and do not replace them. What is the probability you pick three Aces in a row?
1/5525
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