Theoretical
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"? Answer with a fraction.
1/8
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 a whopping 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 reaches closer to the theoretical probability. (The Law of Large Numbers)
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
Define "theoretical probability."
It is the probability of what should occur.
What is the probability that a coin is flipped and lands on tails?
50%
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?
1/2, or 0.50, or 50%
A spinner has 4 equal parts. The colours are red, white, blue and green. Luke spun the spinner 24 times, and landed on blue 8 times. What is the experimental probability of landing on blue? Is it greater than the theoretical probability?
Experimental probability of landing on blue is 8/24. It is greater than the theoretical probability which is 1/4 or 6/24.
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
Define "experimental probability."
The probability of what actually occurs.
What is the probability that a number cube is tossed and lands on an even number?
50%
What is the probability of rolling a factor of 9 on a standard number cube?
2/6, or 0.33, or 33.3%
A letter tile is randomly selected from a bag, recorded, and replaced 100 times. The results are listed here:A = 16 E = 11 I = 29 O = 19 U = 25. What is the experimental probability of selecting the letter "E"?
11/100 or 0.11, or 11%
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
Describe the difference between events that are certain and impossible.
Certain would be 100% of the time and impossible is anything that has a 0% chance of occurring.
What is the probability that a number cube is tossed and it lands on 8?
0%
There are 3 red marbles, 2 green marbles, and 1 yellow marble in a box. One marble is taken out and not replaced. What is the probability that the marble that was taken out is red?
3/6, or 0.50, or 50%
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
5/25, 1/5, or 0.20, or 20%
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
Explain the difference between unlikely and probable
Probable is anything greater than 50% of the time and unlikely is anything less than 50% of the time.
What is the probability that a number cube is tossed and lands on any number 1-6?
100%