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
Kris has a bag that contains only red marbles, green marbles, and purple marbles. Kris pulls a marble from the bag, records the color of the marble, and puts it back in the bag. She performs 25 pulls and draws 8 red marbles, 12 green marbles, and 5 purple marbles. Based on the data, about how many times would Kris pull a red marble if she performed 1,000 pulls?
320
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.
Morgan flipped a coin 80 times. About how many times could Morgan expect the coin to land on heads?
40
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
The probability of winning a game is 1 : 12. If Chloe plays the game 60 times, how many times could she expect to win?
5
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
A coin was tossed 80 times, out of which it landed on heads 60 times.
What is the relative frequency of the coin toss resulting in tails?
25%
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
A bag of marbles has 8 red, 5 purple, 2 green, & 3 orange. If this experiment is completed 325 times, how many times would you predict to NOT get red ?
180 or 181 rounded up
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
Greg has four different colored cards in a box: yellow, red, blue, and green. He randomly selects one card, records the color, and then replaces the card in the box. If Greg does this 300 times, how many yellow cards should he expect to select?
75