| A | B |
|---|
| The attendance of students at the Crosby dance recital is 100%. Gina studies at the Crosby school. How likely is it that Gina is at the recital? | Certain |
| A quarter is tossed at the beginning of a soccer game to determine who will get the kickoff. How likely is it that your team will get to kick first? | As likely as not |
| Alisa has field hockey practice Thursday mornings. How likely is it that Alisa is playing soccer Thursday morning? | Unlikely |
| Mr. and Mrs. Adkins have dinner reservations for 6pm. Mr. Adkins is returning from a trip ands is still three hours away. If it is 4:30pm, what is the likelihood that Mr. Adkins will be on time for dinner? | Unlikely or Impossible |
| A number cube numbered 1-6 is rolled once. How likely is it that you would randomly roll a number less than 4? | As likely as not |
| There are four 7’s, two 5’s, and three 6’s in a set of cards. How likely is it that you will randomly draw a 5? | Unlikely |
| At a baseball concession stand, 18 out of the 25 people who have made a purchase have bought popcorn. What is the probability that the net person win line will purchase popcorn? | 18/25 |
| A machine in a school cafeteria sells apple juice, orange juice, and grape juice. Of the first 13 people to buy juice, 7 chose apple, 4 chose orange, and 2 chose grape. What is the experimental probability that the next person will choose apple or grape? | 9/13 |
| . Jaclyn is a soccer goalie. If she has 21 out of 23 saves in practice, what is the experimental probability that she will have a save on the next shot on goal? | 21/23 |
| Samantha inspects new pants at a factory. Of the first 56 pairs of pants she inspected 48 were acceptable. What is the experimental probability that the next pairs of pants will be acceptable? | 6/7 |
| If Harris hit the bull’s-eye 3 out of 8 times at archery practice, what is the experimental probability that he will hit the bull’s-eye on his next try? | 3/8 |
| Sara has gone to work for 62 days. On 36 of those days she has arrived at work before 8:30AM. On the rest of the days she has arrived after 8:30AM. What is the experimental probability that she will arrive at work after 8:30AM the next day she goes to work? | 13/31 |
| Hannah takes three chips from a board game and tosses them at the same time. What are all the possible outcomes? How large is the sample space? (Note: Game pieces are black on one side and white on the other.) | 8 |
| Marcus spins a spinner numbered 1-3 and flips a dime at the same time. What are the possible outcomes? How large is the sample space? | 6 |
| Susan and Ryan are playing a game that involves spinning a spinner numbered 1-8 and flipping a penny. How many outcomes are possible in the game? | 16 |
| An Italian restaurant offers small, medium, and large calzones. The choices of fillings are cheese, sausage, spinach, or vegetable. How many different calzones can you order? | 12 |
| Rasheed has tan pants, black pants, gray pants, and blue pants. He has a brown sweater and a white sweater. How many different ways can he wear a sweater and pants together? | 8 |
| Mike and Amy are playing a game that involves a 1-6 number cube and a spinner with five sectors of equal area. Each player rolls the number cube and spins the spinner. How many outcomes are possible in the game? | 30 |
| In the first grade, each student has 12 red counters, 12 white counters, 12 green counters, and 12 blue counters. What is the probability of randomly drawing a white counter? | 1/4, 0.25, 25% |
| If you toss two fair nickels, what is the probability that one will land on tails and one will land on heads? | 1/2, 0.50, 50% |
| Maurice has a set of 24 cards. There are 18 orange cards and 6 black cards in the set. Maurice draws one card at random and then replaces it in the deck. What is the probability that the card he draws is orange? | 3/4, 0.75, 75% |
| A standard deck of playing cards has 52 cards. These cards are divided into four 13-card suits: hearts, clubs, spades, and diamonds. Find the probability of drawing a jack, queen, or king at random from a deck of shuffled cards. | 3/13, 0.23, 23% |
| A 1-6 number cube is rolled. Find the probability of rolling a number greater than 1. | 5/6, 0.83, 83% |
| The school music department has a collection of CDs made up of 35 jazz CDs, 20 classical CDs, 25 rock CDs, and 5 country music CDs. What is the probability of randomly choosing a classical CD? | 4/17, 0.24, 24% |
| choosing a prize from a table of prizes and then having your brother choose a prize from the remaining prizes | Dependent |
| choosing a plant form one greenhouse, then choosing a second plant from another greenhouse | Independent |
| spinning a spinner and choosing a Scrabble tile | Independent |
| picking a raffle ticket from a box, replacing the ticket, then picking a second raffle ticket | Independent |
| spinning a prime number on a spinner numbered 1-8, and flipping a coin that lands on heads | 4/8 * 1/2 = 1/4 |
| drawing a blue marble from a bag of eight red and six blue marbles, not replacing it, and then drawing a red marble | 6/14 * 8/13 = 24/91 |
| rolling a 1, 2, or 3 on the first roll of a 1-6 number cube and rolling a 4, 5, or 6 on the second roll of the same cube | 3/6 * 3/6 = 1/4 |
| Randy has 4 pennies, 2 nickels, and 3 dimes in his pocket. If he randomly chooses 2 coins at the same time, what is the probability that both are dimes? | 3/9 * 2/8 = 1/12 |
| eight things taken three at a time | 56 |
| six activities chosen three at a time | 20 |
| How many different four-person relay teams can be chosen from eight students? | 70 |
| The students in Miss Rogers’ class need to choose two class representatives from six nominated students. How many different combinations of class representatives are possible? | 15 |
| There are nine varieties of muffins available at the Coffee Shop. How many different ways can you choose three different muffins? | 84 |
| A photographer wants to take a picture of a family of 7. How many ways could he arrange them side-by-side? | 35 |
| Your PIN contains 5, 6, 9, and 1 but you do not remember the order of the numbers. How many different permutations are there to check? | 5,040 |
| Joe has homework assignment for math, Spanish, and history. In how many different ways can he do his homework? | 24 |
| There are 8 pairs of black socks and 4 pairs of white socks in a drawer. How likely is it that you would randomly pick a black pair of socks from the drawer? | Likely |
| On Friday, Mr. Washington gave his class a math test. Sheila was absent on Friday. If Sheila is an excellent math student, how likely is it that she will get an A on the test when she returns and takes it? | Likely |
| There are 12 boys and 12 girls in a seventh-grade class. If each name is written on a slip of paper and one name is randomly drawn, how likely is it that it will be a girl’s name? | As Likely As Not |
| At Pet’s Haven pet store, 80% of the puppies sold are yellow Labradors. How likely is it that a puppy you choose to buy will be a Labrador? | Likely |
| For the last three years, the average July temperature in the city was between 76 and 80 degrees. How likely is it that this July the average temperature will be 72 degrees? | Unlikely |
| A poll of 125 voters revealed that 75 of them are planning to vote for Mel Winston. What is the experimental probability that Mel Winston will win the election? | 3/5 |
| A basketball player has made 20 of her last 24 free throws. What is the experimental probability that she will make her next free throw? | 5/6 |
| The ticket salesperson at the movie theater noticed that 24 of the first 50 people buying tickets paid with a $20 bill. What is the experimental probability that the next customer to buy a ticket will pay with a $20 bill? | 12/25 |
| It has rained on 8 of the last 30 days. Tomorrow, Shanna is planning a picnic. What is the experimental probability that it will rain at the picnic? | 4/15 |
| On Saturday morning, 200 customers bought items in a department store. Thirty customers paid by check. What is the experimental probability that the next customer will pay by check? | 3/20 |
| A spinner is divided into 8 parts numbered 1-8. Another spinner is divided into 4 parts numbered 1-4. If you spin each spinner once, how many outcomes are possible? | 32 |
| For dessert at lunch, students can choose vanilla, chocolate, or strawberry ice cream with one topping of sprinkles, candy, crumbled cookies, or fudge. How many different choices of desserts do the students have? | 12 |
| If you rolled two number cubes at the same time, how many possible outcomes would you have? | 36 |
| One spinner is divided into 4 parts numbered 1-4. Another is divided into three parts with the letters A, B, and C. If you spin each spinner once, how many outcomes are possible? List the possible outcomes. (2 answers) | 12 |
| Spinning an even number on the first spinner and odd number on another spinner when both spinners have four parts numbered 1-4 | Independent, 1/4 |
| Drawing a heart from a deck of cards with 10 hearts, 10 spades, 10 clubs, and 10 diamonds, then drawing a club without replacing the first card | Dependent, 5/78 |
| Drawing a red marble from a bag of 10 red, 8 blue, and 6 green marbles, then replacing it and drawing a green marble. (Make sure it is reduced all the way.) | Independent 5/48 |
