Vera is flipping a coin. What is the theoretical probability the coin will land on heads?
What is 1/2, 0.5, or 50%?
Chance flipped a coin 10 times and landed on heads 4 times. What is the experimental probability of landing on heads?
What is 2/5, or 0.4, or 40%?
If you flip a coin 10 times, about how many times should it land on heads?
Andrew rolled a die twenty times. He landed on 2 five times, 3 seven times, 6 two times, and 5 six times. What is the experimental probability of landing on 6?
1/10, 0.1, or 10%
Andrew has 30 marbles in a bag. The theoretical probability of choosing a green or blue marble is 1/2. How many marbles are blue or green?
15 blue or green marbles
Kami recorded the types of birds that visit her 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%
There are 20 students in Laura's class. The theoretical probability of choosing a female student to answer a question is 40%. How many girls are in the class?
8 girls
Describe the difference between events that are certain, likely, unlikely, or impossible.
Certain would be 100% of the time, likely is anything greater than 50% of the time, unlikely is anything less than 50% of the time, and impossible is anything that has a 0% chance of occuring.
Sophia spins a spinner with 5 equal sections numbered 1-5. What is the probability she will spin and land on a composite number?
What is 1/5 or 0.2, or 20%?
Chance has a spinner with 5 equal sections, each a different color. After only 10 spins, the pointer had landed on red 40% of the time. After a whopping 1,000 spins, the pointer landed on red only 22% of the time. How can Chance account for this change in experimental probability?
As the number of trials increase, the experimental probability reaches closer to the theoretical probability. (The Law of Large Numbers)
Vera has a 0.2 chance of winning Stacy's raffle. If there are 30 tickets in the bucket, how many of the tickets have Carley's name on it?
6