Random
A bag has 20 marbles: 4 reds, 6 blue, 2 yellow, and 8 greens.
What is the probability of picking a red marble?
1/5 or 0.2 or 20%
What is theoretical Probability of getting a 6 on a die?
1/6 or about 16.7% or about 0.17 (0.16666666666...)
Nick rolled a die 50 times. It landed on the four 20 times. What's his experimental probability of rolling a four?
2/5 or 40% or 0.4
4.If 80% of the students in the class are boys. What is the probability of choosing a boy in the classroom?
4/5 or 0.8 or 80%
3/9
1/3
The set of all possible outcomes is known as ...
sample space
A bag contains 2 red, 3 yellow, and 5 green marbles. What is the theoretical probability of choosing not a red marble?
4/5 or 80% or 0.8
If you flipped a coin 30 times and got heads of 23 times. What is the experimental Probability?
23/30
4.If 90% of the students in the class are boys. What is the probability of choosing a boy in the classroom?
9/10 or 0.9 or 90%
4/10
2/5
Probability can be between which 2 numbers?
0 and 1
What is the theoretical probability of rolling an odd number on a fair die?
1/2 or 50% or 0.5
1.Gavin rolled a number cube labeled 1 through 6 a total of 40 times. The number 4 was rolled 8 times. What is the experimental probability of rolling a 4?
1/5 or 0.2 or 20%
4.There are 25 students in a class. If 25 of the students in the class are boys. What is the probability of choosing a boy in the classroom?
100% or 25/25 or 1
3/30
1/10
What is an outcome?
The result of an experiment
If you flipped a coin 30 times. What is the theoretical probability of getting heads?
1/2 or 0.5 or 50%
David rolled a die 25 times. It landed on heads 17 times. What's his experimental probability of landing on tails?
8/25 or 32% or 0.32
Whats the difference between theoretical probability and experimental probability?
Theoretical is what should happen and experimental is what actually happened
3/6
1/2
What is probabilty?
The chance that some event will occur.
If you flipped a coin 3 times, what's the probability it would land on heads 3 times?
1/8 or 12.5% or 0.125
3.Johnathan flipped a fair coin 80 times. It landed tails up sixty-five times. What is the theoretical probability that the coin will land tails up the next time he flips the coin?
1/2 or 0.5 or 50%
Bob has to wear either a t-shirt or jersey. Then, he can choose between shorts and jeans. Finally, he needs to pick between sandals or tennis shoes. How many outcomes are possible?
8
4/20
1/5