Probability Simple/Complement
There were 5 bouncy balls in a jar. 2 of them were tie-dye and the other three were purple. What is the probability that you will get all three of the purple ones?
3/5
A fair coin is tossed in the air 4 times. If the experimental probability of landing on tails is 1/4, then what is the difference between the theoretical and experimental theory?
Theoretical: 1/2
Experimental:1/4 (what actually happened)
20 people brought snacks to a soccer game. The population of parents watching the game was 15. What is the sample of parents who brought snacks to the game?
20 parents
22, 54, 89, 72, 97 What is the median?
72
There were 50 crayons in the box. 20 people guessed there were 40 in the box and 30 people guessed there were 90 in the box. Which people had the closest inference?
The people who said there were 40 in the box.
There were 50 total gum balls in the container. 10 of them were purple, 5 of them were blue, 20 of them were yellow and 15 were red. What is the probabilty it will not be all of the red ones that you get out of the container? What type of probability is it?
35/50
Complement Probability
During a team building game, participants reach into a bag and randomly select a colored flag, which determines their team. If there are 7 green flags, 5 red flags, and 3 yellow flags, then what is the theoretical probability of selecting a red flag?
5/15 or 1/3
There are 200 people at a festival. What could a sample of them be?
Who rode rides, who ate, how many people drove etc.
3, 7, 23, 7, 18, 23, 5, 12, 45, 7, 12, 2
What is the mode?
7
There were 50 skittles in a container. 10 Skittles were picked out. 4 were red, 2 were green, 1 was purple, 3 were orange. Approximately how many red could be pulled out of the entire bag?
20/50
There was a total of 40 gummy bears in a bag. 10 of them were green, 5 of them were yellow, 4 of them were clear, 10 of them were red and the rest orange. What is the probability they will pick the 4 clear ones? Reduced
1/10 reduced
In the media center at Mrs. Tripp's house, there are 7 comedies, 3 scary, 4 mystery, and 4 family DVD movies. They randomly selected every 3rd movie to watch on the shelf. They ended up watching 4 comedies, 1 mystery, and 1 family movie. What is the theoretical probability of each of the different genres? What were the experimental probabilities?
Theoretical:
7/18 comedy, 3/18 or 1/6scary, 4/18 or 2/9 mystery, 4/18 or 2/9 family
Experimental:
4/6 or 2/3 comedy, 1/6 mystery, 1/6 family, 0/6 scary.
There were 20 people in a book club. 5 of them picked a really challenging book to read. What is the sample population?
5 of them
3, 7, 23, 7, 18, 23, 5, 12, 45, 7, 12, 2
What is the mean?
13.67
There were ten pieces of gum in a case. 8 people guessed how many pieces of gum were in the case. 3 said 11 and 5 said 8. What had the closest inference?
The 3 people that said 11
There were 16 M&M's in a bag. Three were blue, two were red, one was orange, five were brown and one was yellow. You pick 5 out of the bag. What is the probability you will not get brown out of the bag?
11/16
The list shows the different types of pizzas that are made at Rusticana and the amount that were ordered for Monday.
Pepperoni - 11 Supreme- 7 Cheese -6 Hawaiian - 3
What is the theoretical probability of Supreme being ordered?
What is the experimental probability of Supreme being ordered?
Theoretical - 1/4
Experimental - 7/27
There were 400 people at an orchestra concert. 200 of them bought season tickets. What kind of sample is this?
Population sample
117, 147, 89, 93, 147, 117, 87, 116, 112, 145, 117
What is the mode and the mean?
Mode: 117
Mean: 117
There were 200 marbles in the jar. Mrs. Tripp pulled out 25 marbles. 15 were green, 5 were blue, and 10 were red. Approximately how many blue could be in the entire jar?
40/200 or 1/5
There is a bag of marbles. There are 3 red marbles and 3 yellow marbles. You choose two out of the bag. What is the probability that you will get two yellow marbles.
2/6
Each week Mrs. O'Reilly selects some books to place around the library on display. This week they were:
3 mystery, 4 biographies, 6 sci-fi , and 2 comic books
What is the theoretical probability of a student selecting a mystery book?
3/15 of 1/5
There are 5 ballet dancers. What is the population?
All the students in a dance class, all the people in a show etc.
11.17, 12.33, 11.82, 10.83, 10.97, 11.43
What is the median and mean?
Median:11.30
Mean: 11.425 or 11.43
At a school assembly , four out of the first 10 students were wearing spirit wear. Based on this information, if 500 students were at the assembly, then how many students could be expected to have the spirit wear?
200 students are expected to be wearing spirit wear.