sample space
Simple Probability
Compound Events
Predictions
Probability as Decimals and Percents.
100
Robert has 4 marbles in a bag - two red, one blue, and one green. He draws one marble from the bag and, without replacing it, draws another marble. How many possible outcomes are there for this event?
12
100
A standard number cube is rolled. What is the probability of rolling a 6
1/6
100
Mrs. Kelley is going to flip a coin and roll a dice. What is the probability that she will land on heads and an even number?
1/4
100
A box of 25 light bulbs is shipped to a hardware store. When it arrives, four of the bulbs are broken. Predict the number of broken light bulbs in an order of 125 bulbs.
20
100
Richard had a box of candies. 12 of them were blue, 13 were red, and 15 were pink. What is the probability, written as a percent that Richard will choose a pink or blue candy?
67.5%
200
What could this tree diagram represent?
Answers vary
200
A quarter is flipped, what is the probability of landing on heads?
1/2
200
There are six marbles in a bag. Three are green, and three are yellow. If you draw a marble, replace it, and then draw another, what is the probability of choosing two yellow marbles?
1/4
200
In a game the player wins if he rolls a 6 on a number cube. If the number cube is rolled 18 times, then what is a reasonable prediction for the number of unsuccessful rolls?
15
200
If something had a 1/2 chance of winning, what is this as a decimal?
.5
300
You flip three quarters. How many possible outcomes are there for this event?
8
300
At the pediatricians office, patients are able to draw a toy from the toy bin. The toy bin has 12 puzzles, 16 boxes of crayons, and 2 bouncy balls. What is the probability that a child would draw a puzzle?
2/5
300
One card from a deck of cards is selected, it is replaced, and another card is chosen. What is the probability that the first card is a red card and the second is a diamond. (Remember that there are 52 cards in a deck)
1/8
300
On a youth soccer team 3 out of 12 team members have played in the previous years. Based on this information, if 150 kids are in the youth soccer league, then about how many could be expected to have played the year before?
38
300
The track team consists of 8 hurdlers, six high jumpers, and two sprinters. The track coach wants to randomly name a captain for the next track meet. What is the probability, written as a decimal, that the person chosen will be a sprinter?
0.125
400
Mrs. Kelley is rolling a number cube. What is the sample space for this event?
1, 2, 3, 4, 5, 6
400
The letters in the word SOCCER are put into a bag and drawn randomly. What is the probability of choosing a vowel?
1/3
400
Two number cubes are rolled sequentially. What is the probability that the first number cube shows a two or a three and the other number cube shows an even number?
1/6
400
Suppose you flip a coin 10000 times. What is a reasonable prediction for the number of times the coin lands on tails?
5000
400
Of 100 random students surveyed 16 own a horse. Based on these results how many of the next 50 people to you expect to own a horse. Give your answer as a percent.
16%
500
Mrs. Kelley has 2 purple fish, 2 green fish, 2 red fish, 3 gray fish, and one black and white fish. If she draws one fish at random, does not replace it, and then gets another. How many possible things can happen?
90
500
In the movie drawer, there are seven action movies, five comedies, and three dramas. What is the probability of not choosing a comedy?
2/3
500
The letters of the alphabet are written on cards and placed in a brown paper bag. What is the probability of drawing a vowel, replacing it, and then drawing another vowel.
25/676
500
The airport security randomly selected 36 suitcases from the security line. Of these bags, they screened 8 suitcases. Based on thie information, what is the most reasonable prediction for the number of suitcases they will screen in a group of 180?
40
500
If the 25% of a random sample of people like ketchup with their fries, how many of the next 160 people do you expect to like ketchup with their fries?
40