
Probability Recap
Presentation
•
Mathematics
•
9th - 12th Grade
•
Practice Problem
•
Medium
+4
Standards-aligned
Lindsay Noelle Wynne
Used 6+ times
FREE Resource
14 Slides • 40 Questions
1
Probability Recap
Advanced Algebra
2
Probability of Simple Events
3
Example 1: A die with sides labeled 1-6 is rolled, find the probability of rolling a 6
P(6) as a ratio =
wanted
total
4
O
5
Example 2: Find the probability of rolling a 2, 3, or 4 on a number cube.
wanted/total
number cube has 6 possible outcomes; 1, 2, 3, 4, 5, 6
we want the P(2, 3, or 4) which are three of the six possible outcomes
6
O
O
O
7
Multiple Choice
The letters that form the word ALGEBRA are placed in a bowl.
What is the probability of choosing a letter that is NOT “A”?
72
495
75
4910
8
Multiple Choice
What is the probability of spinning an EVEN number?
16 32 %
33 31 %
50%
75%
9
Multiple Choice
What is the probability of selecting a brown M&M from this bowl?
4 yellow, 6 orange, 2 brown, 3 green, 5 blue
182
91
202
101
10
Multiple Choice
You pick a marble from this bag.
What is the probability you will choose either a black or white marble?
3/5
9/100
1/10
2/5
11
Conditional Probability (And/Or Probability)
12
13
14
15
16
Multiple Choice
P(white, then purple, then black)
17
Multiple Choice
A die is rolled. What is the probability of rolling a 1 or a number greater than 3? (Reduce the fraction!)
2/3
1/2
5/6
1
None of the above
18
Multiple Choice
Lucy has the spinner pictured and spins it. What is the probability that she lands on blue or on yellow? Simplify.
1 / 16
1 ⁄ 2
1 ⁄ 8
3 ⁄ 4
19
Multiple Choice
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Marbles are taken one at a time without replacement. P(both marbles are purple)
2/9
1/3
1/2
1/4
20
Conditional Probability
(Given Probability)
21
Multiple Choice
What is the probability that a student does play a sport given they do not play an instrument?
.78
.22
.10
.5
22
Multiple Choice
P(Pizza | Senior):
10/15
4/5
2/3
10/5
23
Multiple Choice
A number is selected, at random, from the set {1, 2, 3, 4, 5, 6, 7, 8}.
Find P(odd given less than 7).
1/2
3/8
4/7
1/4
24
Two Way Frequency Tables
25
26
Multiple Choice
The table shows the different types of engineers and the subject they liked most. What percentage of people surveyed were chemical engineers who preferred math?
16.5%
33.1%
17.6%
15.5%
27
Multiple Choice
28
Multiple Choice
29
Multiple Choice
30
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
1) What is the probability a randomly selected student got an A or B for the semester?
15/100
20/100
35/100
65/100
31
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
2) What is the probability a randomly selected student is male?
12/100
17/100
44/100
56/100
32
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
3) What is the probability a randomly selected student earned a passing grade?
20/100
35/100
65/100
87/100
33
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
4) Given that the grade is an A, what is the probability of the student being female?
8/20
12/20
8/44
12/56
34
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
5) Given that the grade is a B, what is the probability of the student being male?
6/15
9/15
6/56
9/44
35
Multiple Choice
The make-up of employees at a police station is shown in the table above:
6) What is the probability that a randomly selected employee is a chief?
1/100
2/100
1/33
1/67
36
Multiple Choice
The make-up of employees at a police station is shown in the table above:
7) What is the probability that a randomly selected employee is male and a sergeant?
8/13
8/33
8/67
8/100
37
Multiple Choice
The make-up of employees at a police station is shown in the table above:
8) Given the employee is a chief, what is the probability the employee is male?
1/100
1/33
1/2
1/67
38
Multiple Choice
The make-up of employees at a police station is shown in the table above:
9) Given the employee is a female, what is the probability of the employee being a chief?
1/2
1/33
1/67
1/100
39
Multiple Choice
The make-up of employees at a police station is shown in the table above:
10) Given the employee is an inspector, what is the probability the employee is male?
2/6
2/33
2/67
2/100
40
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
1) What is the probability a randomly selected student got an A or B for the semester?
15/100
20/100
35/100
65/100
41
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
2) What is the probability a randomly selected student is male?
12/100
17/100
44/100
56/100
42
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
3) What is the probability a randomly selected student earned a passing grade?
20/100
35/100
65/100
87/100
43
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
4) Given that the grade is an A, what is the probability of the student being female?
8/20
12/20
8/44
12/56
44
Multiple Choice
The two-way table above gives information about the grades for the semester in Mrs. Hardcase’s English class.
5) Given that the grade is a B, what is the probability of the student being male?
6/15
9/15
6/56
9/44
45
Multiple Choice
The make-up of employees at a police station is shown in the table above:
6) What is the probability that a randomly selected employee is a chief?
1/100
2/100
1/33
1/67
46
Multiple Choice
The make-up of employees at a police station is shown in the table above:
7) What is the probability that a randomly selected employee is male and a sergeant?
8/13
8/33
8/67
8/100
47
Multiple Choice
The make-up of employees at a police station is shown in the table above:
8) Given the employee is a chief, what is the probability the employee is male?
1/100
1/33
1/2
1/67
48
Multiple Choice
The make-up of employees at a police station is shown in the table above:
9) Given the employee is a female, what is the probability of the employee being a chief?
1/2
1/33
1/67
1/100
49
Multiple Choice
The make-up of employees at a police station is shown in the table above:
10) Given the employee is an inspector, what is the probability the employee is male?
2/6
2/33
2/67
2/100
50
Multiple Choice
Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.
11) What is the probability a randomly selected student is male and has a provisional license?
14/60
26/60
14/120
26/120
51
Multiple Choice
Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.
12) What is the probability a randomly selected student is female and can drive?
15/60
48/60
33/120
48/120
52
Multiple Choice
Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.
13) What is the probability a randomly selected student has no license?
20/60
32/120
20/32
20/59
53
Multiple Choice
Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.
14) Given that a student is male, what is the probability the student can’t drive?
12/60
12/120
20/60
20/120
54
Multiple Choice
Chelsea surveyed a sample of students in the senior class to determine the distribution of students with a driver’s license.
15) Given that a student has a permit, what is the probability the student is female?
15/29
33/59
15/60
15/120
Probability Recap
Advanced Algebra
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