Maria is flipping a coin. What is the theoretical probability the coin will land on heads?
1/2, 0.5, or 50%?
Layla flipped a coin 10 times and landed on heads 4 times. What is the experimental probability of getting heads?
2/5, or 0.4, or 40%?
If you flip a coin 10 times, about how many times should it land on heads?
What is the probability that a coin is flipped and lands on heads twice in a row?
1/4
The classic wood carousel at Carousel Park in Hampton, VA has 32 horses and 16 of them are standing horses. What is the probability of randomly selecting a standing horse?
1/2, or 0.50, or 50%?
Jason 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 getting 6?
1/10, 0.1, or 10%
What is the probability that you get a one twice in a row when you roll a die?
1/36
What is the probability of rolling a number greater than 2 with a standard number cube?
2/3, or 0.66, or 66%?
A letter is randomly selected from a bag, recorded, and replaced 100 times. The results are below. What is the experimental probability of getting "E"? A = 16 E = 11 I = 29 O = 19 U = 25
11/100 or 0.11, or 11%
You have a spinner with four equal sections that are blue, red, green, and yellow. What is the probability you get a red and then a green?
1/16
There are 4 red marbles, 3 green marbles, and 1 yellow marble in a box. One marble is taken out of the box. What is the probability that the marble is red or yellow?
5/8, 0.625 or 62.5%?
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%
There are 20 students in Ms. Williams 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.
You have a bag with 3 red marbles, 2 blue and 5 green. What is the probability you get a red marble, put it back and then get a green marble?
15/100 or 3/20
Jarvonya spins a spinner with 5 equal sections numbered 1-5. What is the probability she will spin and land on a composite number?
1/5 or 0.2, or 20%?
Hasaan 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 1,000 spins, the pointer landed on red only 22% of the time. How can Hasaan account for this change in experimental probability?
As the number of trials increase, the experimental probability gets closer to the theoretical probability.
You have a bag with 3 red marbles, 2 blue and 5 green. What is the probability that you get a red marble, keep it, and then get a green marble?
15/90 or 1/6