Show:
Theoretical Probability
Probability
Experimental Probability
Calculating Odds
Probability of Independent & Dependent Events
100
A number cube is rolled. Find the probability. P(5) Write each answer as a fraction, a decimal and percent.
What is 1/6, 1.66, 16.6%
100
Neil has blue, black, tan, and gray pants. How likely is it that he will wear green pants to school today?
What is impossible
100
Sam has been keeping a record of her math grades. Of her first 15 grades, 10 have been above 82. What is the probability that her next grade will be above 82. Write your answer as a simplified fraction.
What is 2/3
100
Suppose you choose a letter at random from the word "Washington." What are the odds that the letter you choose will be a vowel?
What is 3:7
100
Nine boys and 12 girls want to play soccer. Teams are formed by selecting one player at a time. Is the probability of selecting a boy after a girl is selected a dependent or an independent event.
What is dependent.
200
A number cube is rolled. Find P(less than one)
What is 0
200
Ramona went to school today. If her entire class went on a field trip, how likely is it that Ramona went on the field trip?
What is certain.
200
During her ride home from school, Dana sees 15 cars driven by men and 34 cars driven by women. What is the experimental probability that the next car Dana sees will be driven by a man?
What is 15/49
200
A student is chosen at random from a class of 10 boys and 20 girls. What are the odds that a girl is not chosen?
What is 1:2
200
Randy has 4 pennies, 2 nickels, and 3 dimes in his pocket. If he randomly chooses 2 coins, what is the probability that both are dimes?
What is 1/12
300
A number cube is rolled. Find P(4 or 6) Write each answer as a fraction, a decimal, and a percent.
What is 1/3, .333, 33.3%
300
Sergio has math class during first period. Is it impossible, unlikely, as likely as not, likely or certain that Sergio is in math class during second period?
What is unlikely. It is unlikely Sergio is in math class during second period because he has math during first period.
300
Nestor works at an ice cream stand. Of the first 27 sundaes that he made one day, 15 had chocolate ice cream. What is the experimental probability that the next sundae he made had chocolate ice cream?
What is 5/9
300
A compact disk jukebox has 6 rock CDs, 5 country CDs, 4 R&B CDs, and 2 rap CDs. The jukebox randomly selects a CD to play. What are the odds the jukebox will not choose a country CD?
What is 12:5
300
What is the probability of spinning a red on a spinner with equally sized red, blue, yellow, and green sections, and flipping a coin that lands tails up.
What is 1/8.
400
A number cube is rolled. Find the P(not 3 or not 4) Write as a fraction, decimal, and percent.
What is 2/3, .666, 66.6%
400
You roll two fair number cubes. What is the likelihood you will roll a total of 14?
What is impossible.
400
A reporter surveys 75 people to determine whether they plan to vote for or against a proposed bill. Of these people, 65 say they plan to vote for the bill. What is the experimental probability that the next person surveyed would say he or she plans to vote against it?
What is 2/15
400
The probability of choosing a red marble from a bag of marbles is 2/5. What are the odds of choosing a red marble from the bag?
What is 2:3
400
Each letter of the word "probability" is written on a card and put in a bag. What is the probability of picking a vowel on the first try and again on the second try if the first cad is replaced?
What is 16/121
500
A number cube is rolled. Find the P(multiple of 2) Write as a fraction, decimal and percent.
What is 1/2, .5, 50%
500
Suppose you draw a card from a set of cards that is numbered 2-16. Is it impossible, unlikely, as likely as not, likely, or certain that you will draw a composite number?
What is likely
500
Carl is conducting a survey for the school paper. Of the 31 students he has interviewed, 10 have only a dog, 9 have only a cat, and 5 have both a dog and a cat. What is the experimental probability that the next person Carl surveys will not have a dog or a cat?
What is 7/31.
500
The probability of choosing a red marble from a bag of marbles is 2/5. What are the odds against choosing a red marble from the bag?
What is 3:2
500
There are 40 tags numbered 1 through 40 in a bag. What is the probability that Glenn will pick a multiple of 5 and then a multiple of 9 without replacing the first tag?
What is 4/195