Probability & Outcomes
Probability Between 0 & 1
Probability of a Chance Event
Experimental Probability
Uniform Probability
100
Which describes a non-uniform probability model?
The sum result of rolling two dice
100
A bag contains 2 red balls and 18 green balls. A ball is chosen at random from the bag. What is the BEST answer for the probability of drawing a green ball?
likely, unlikely, impossible, or very likely
Very Likely
100
A survey asked 36 students to choose their favorite type of music from the choices of rock, pop, and country. The results of the survey are given below.
• 11 rock
• 16 pop
• 9 country
Based on this information, how many students in a class of 240 students would be expected to choose country as their favorite type of music?
60
100
Find
Find the probability of spinning a 2 on a spinner 1-6
1/6
100
Which describes a uniform probability model?
A. spinner with ten equally divided sections
B. drawing a face or numbered card from a deck of cards
C. selecting a month using only the first letter of that month
A
A spinner with ten equally divided sections is an example of a uniform probability model.
200
If you make a tree diagram and then list all of the possible outcomes for flipping a coin and rolling a 6-sided die, how many possible outcomes are there?
12
200
A bag contains 2 yellow balls and 8 red balls. A ball is chosen at random from the bag. What is the BEST answer for the probability of drawing the yellow ball?
Unlikely
200
At a mall food court, the first 40 orders for the day are given below.
• 22 pizza slices
• 8 hamburgers
• 4 hot dogs
• 6 fried chicken
Based on this information, how many hamburger orders could be expected from 300 customers?
60 hamburger orders
8/40 = 1/5
300 × 1/5 = 300/5 = 60
200
What is the sample space when a coin is tossed twice?
-
{HH, HT, TT, TH}
200
Which type of distribution represents a uniform probability model?
A. Normal
B. Rectangular
C. Positive Skew
D. Negative Skew
B. Rectangular
300
A bag of marbles contains 5 red, 3 blue, 2 green, and 2 yellow marbles. What is the probability that you choose a green marble and then another green marble, assuming you replace the first marble?
1/36
300
Which choice correctly describes this event? I will roll a die and land on 1 AND 3.
Impossible
The word "AND" means you are landing on both 1 and 3 at the same time. However, you can only land on one number on a single roll.
300
A box contains 500 marbles. The result of 20 marbles pulled at random from the box is given below.
• 5 red marbles
• 6 blue marbles
• 3 green marbles
• 4 black marbles
• 2 yellow marbles
Based on this information, how many black marbles could be expected in the box?
100 black marbles
4/20 = 1/5 x 500 = 500/5 = 100
300
In the cafeteria, there are 7 teachers, 48 girls, and 45 boys. What is the probability that a person chosen at random from the cafeteria is a boy?
45/100 or 9/20
300
A bag contains 6 red marbles, 6 purple marbles, and 6 yellow marbles. What is the probability of randomly selecting a yellow marble from the bag?
1/3
400
Flipping a Coin, it lands on Heads 26 times and Tails 24 times. Miguel flips a coin 50 times and records whether it lands on heads or tails. What is the experimental probability that the coin will land on heads?
26/50
400
You roll a six-sided die. How likely is it that you roll a 3?
Unlikely
The probability of rolling a 3 is 1/6 or about 0.17, therefore it is an unlikely event.
400
Caroline flips a coin 3 times. According to the tree diagram, how many possible outcomes exist?
8
400
Jada has a bag with tiles. She pulls a tile from the bag without looking, records the shape, and then puts the tile back in the bag. She gets a star 5 times, a circle 3 times, and a square 2 times. Suppose Jada does the same experiment 100 times. What is a reasonable prediction for the number of times she will pull a tile with a star?
5/10
400
A box of 32 chocolates contains an equal number of strawberry, cherry, raspberry, and blueberry filled candies. What is the probability of randomly selecting a raspberry filled candy?
1/4
500
A box of 40 chocolates contains an equal number of strawberry, cherry, raspberry, and blueberry filled candies. What is the probability of randomly selecting a raspberry filled candy?
1/4
500
You roll a six-sided die. How likely is it that you roll a number less than 6?
Likely
The probability of rolling a number less than 6 is 5/6 or about 0.83, therefore it is a likely event.
500
Jimmy rolled a die 90 times and recorded the results. He got a one 15 times, a two 22 times, a three 18 times, a four 11 times, a five 13 times and a six 11 times. Using his results how many six's could Jimmy expect if he rolled the die 1500 times?
183
If an action is repeated n times and a certain event occurs b times, the ratio b/n is called the relative frequency of the event occurring. Multiply 1500 by the relative frequency of getting a six.
500
Jada has a bag with tiles. She pulls a tile from the bag without looking, records the shape, and then puts the tile back in the bag. She gets a star 5 times, a circle 3 times, and a square 2 times. Suppose Jada does the same experiment 100 times. What is a reasonable prediction for the number of times she will pull a tile with a square?
2/10
500
Which describes a uniform probability model?
A. Drawing a red or black card from a deck of cards.
B. Selecting a ball from 2 red balls and 3 yellow balls.
C. Equally divided five section spinner with three colors
A. Drawing a red or black card from a deck of cards