Likelihood
Basic Probability
Theoretical & Experimental Probability
Predictions
100
The probability that Michael will win the lottery is very unlikely. What value could represent the probability that Michael will win the lottery?
larger than 0 less than 0.50
100
John has a bag of different colored marbles. He has 6 red marbles, 3 blue marbles, 7 yellow marbles, and 5 green marbles. If John reaches into the bag and randomly pulls out a marble, what is the probability that the marble will be blue?
3/21, 1/7
0.14
14%
100
You have a bag of 14 green, 11 red, and 5 orange skittles.
P(green)=
Fraction in SIMPLEST FORM.
7/15
100
Krispy Kreme needs to make 400 donuts this morning for East Jackson Middle School students. They know 1/5 of the students would prefer glazed. How many donuts should they prepare that are glazed?
80
200
Jenny bought a bag of 23 blue, 2 pink, and 25 purple gumballs. Determine how likely it is for Jenny to randomly draw a purple gumball.
equally likely
200
Jacob has a spinner with five equal-sized sections, labeled 4–8, as shown below.
What is the probability of spinning a number greater than 5?
3/5
.6
60%
200
A workbook is made up of 3 chapters as described below.
- Chapter 1 is 45 pages long;
- Chapter 2 is 60 pages long;
- Chapter 3 is 55 pages long.
Dominic opens the workbook to a random page and records the chapter number. He repeats this process 50 times. The results are shown in the table below.
What is the experimental probability that Dominic opens the page to chapter 3 as a percent?
20%
200
Multiple Choice Question
There are 500 students in a school. Sara asked 100 of the students what their favorite lunch is. Out of the students surveyed 45 said pizza, 15 said burritos, 30 said hamburgers, and 10 said hot dogs. Based upon the results, how many students out of the whole school should can we predict will choose hamburgers?
30/100 x 500
150
300
Jenny bought a bag of 23 blue, 2 pink, and 25 purple gumballs. Determine how likely it is for Jenny to randomly draw a blue or purple gumball.
Unlikely, Neither Likely nor Unlikely, or Likely for each event given.
likely
300
A workbook is made up of 3 chapters as described below.
- Chapter 1 is 45 pages long;
- Chapter 2 is 60 pages long;
- Chapter 3 is 55 pages long.
What is the probability as a fraction that you open the workbook to Chapter 1?
45/160, 9/32
.28
28%
300
A workbook is made up of 3 chapters as described below.
- Chapter 1 is 45 pages long;
- Chapter 2 is 60 pages long;
- Chapter 3 is 55 pages long.
Dominic opens the workbook to a random page and records the chapter number. He repeats this process 50 times. The results are shown in the table below.
What is the theoretical probability that Dominic opens the workbook to a page in Chapter 3 as a percent?
34%
300
A bag contains 3 purple marbles, 4 yellow marbles, and 5 green marbles. Erica draws a marble out of the bag, replaces it, and draws another marble. She draws a marble 130 times. How many times can she expect to draw a green marble?
5/12 x 130
54 times
400
Rosa is attending an event where prizes are being given away. The probability of winning a T‑shirt is 0.89 and the probability of winning a $20 gift certificate is 0.05. What is the likelihood of Rosa winning any prizes at the event?
likely
400
Customers at Raul's clothing store can purchase tee shirts in sizes small (S), medium (M), large (L), and extra large (XL). Raul collected the data below on his tee shirt sales over a one month period.
What is the probability that a person purchasing a tee shirt will purchase the small size?
265/1541
0.17
17%
400
Ms. Kingsley creates a game for a school festival. In her game, students draw a lettered token from the bag. Students win a prize depending on which letter is on the drawn token. Then the token is returned to the bag. The table below shows the three possible outcomes and the count of each type of token in the bag.
Marcie, a student at the school, keeps track of the results of 20 consecutive draws from the bag before she plays the game. She records these results in a table, as shown below.
What is the theoretical probability of winning a small prize as a percent?
10/40
25%
400
Out of the 400 people, 167 have brown eyes, 132 have blue eyes, and 57 have hazel eyes.
There are approximately 332,000 in the entire city. According to the survey, approximately how many people in the entire city have brown eyes?
167/400 x 332,000
138,610
500
Jacob has a spinner with five equal-sized sections, labeled 4–8, as shown below.
What is the likelihood Jacob will spin an prime number or even number?
Certain
500
A teacher divides his class into groups of three students each and then randomly selects one of the students in each group to flip a fair coin. The probability experiment for one of the groups is represented by the tree diagram below.
What is the probability that Bobby is picked and the coin he flips lands on tails?
1/6
500
Ms. Kingsley creates a game for a school festival. In her game, students draw a lettered token from the bag. Students win a prize depending on which letter is on the drawn token. Then the token is returned to the bag. The table below shows the three possible outcomes and the count of each type of token in the bag.
Marcie, a student at the school, keeps track of the results of 20 consecutive draws from the bag before she plays the game. She records these results in a table, as shown below.
What is the experimental probability of winning an small or large prize as a percent?
7/20
35%
500
A bag contains 3 purple marbles, 4 yellow marbles, and 5 green marbles. Erica draws a marble out of the bag, replaces it, and draws another marble. She draws a marble 130 times. How many times can she expect to draw a green or purple marble?
8/12 x 130
87 times