Theoretical
Maria is flipping a coin. What is the theoretical probability the coin will land on heads?
What is 1/2 or 0.5?
Layla 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
If you flip a coin 10 times, about how many times should it land on heads?
Define "probability."
The chance that an event will occur
Classify the likelihood of each: Impossible, Unlikely, Equally Likely, Likely, Certain
Tay: 1/6
Trey: 4/6
Tyrone: 2/6
U, L, U
The classic wood carousel at Carousel Park in Hampton, VA has 32 horses and 15 of them are standing horses. What is the probability of randomly selecting a standing horse?
15/32 or 0.46875
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 landing on 6?
1/10 or 0.1
Define "experimental probability."
The probability of what actually occurs.
Classify the likelihood of each: Impossible, Unlikely, Equally Likely, Likely, Certain
Evelin: 0.5
Elizabeth: 0.05
Eli'Jah: 0.45
E, U, U
A spinner has 7 sections of equal size. They are numbered 1-7. What is the theoretical probability of landing on a number greater than 3 ?
4/7
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
Trent has 30 marbles in a bag. 4 are blue, 9 are red, 8 are yellow, and 9 are white. If he randomly selects from the bag & put each marble back after each time, how many times would you expect him to get yellow if done 120 times
About 32 times
Classify the likelihood of each: Impossible, Unlikely, Equally Likely, Likely, Certain
Jalayha: 0/29
Jaliya: 1
Jeremiah: 0.0
I, C, I
There are 11 red marbles, 14 green marbles, and 5 yellow marble in a box. One marble is taken out of the box. What is the probability that the marble is red or yellow?
16/30 or 8/15 or 0.533
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 or 1/5, or 0.20
There are 114 students in the 7th grade. The theoretical probability of choosing a female student to answer a question is about 45%. How many girls are in the 7th grade ?
About 51 girls
Describe the difference between Likely & Equally Likely
Equally = 0.50 =1/2
Likely > 0.50 or 1/2
Classify the likelihood of each: Impossible, Unlikely, Equally Likely, Likely, Certain
Aubrey: 43/87
Austin: 11/40
Audrianna: 0.238
U,U,U
The ratio of roses to total flowers is 16:40. The rest of the flowers are lillies. What is the probability of getting lillies ?
24/40 or 0.6 or 3/5
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)
A bread making machine creates good-shaped slices 78/80 times. A company loses 0.02$ for each bad slice. How much would they expect to lose if they made 1200 slices ?
The box method uses Theoretical & Experimental to do what exactly?
To predict how many times we expect something to happen during an experiment, based on theoretical. "About 15 times" since it is a prediction
Classify the likelihood of each: Impossible, Unlikely, Equally Likely, Likely, Certain
Kavy: 0.45
Kevin: 1/20
King: ?