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WorksheetsCumulative PROBABILITY BANK
Total questions: 132
Worksheet time: 4hrs 7mins
Which of these cannot be considered a probability of an outcome?
1/3
-1/5
0.80
112%
1
How many outcomes are in the sample space for tossing one coin?
1
2
4
8
P(green) =
A(n) ___________ is something that might happen.
set
probability
event
subset
The collection of all possible outcomes is called the ____________________.
set
probability
event
sample space
You have 5 pairs of pants, 6 shirts, and 2 pairs of shoes. How many total "outfits" do you have?
5+6+2=13 outfits
(5+6)⋅2 =13 outfits
5⋅6⋅2=60 outfits
(5⋅6)+2=32 outfits
You will roll a six-sided single die. What is the theoretical probability that you roll an even number?
P(even) = 32
P(even) = 31
P(even) = 21
P(even) = 43
Probability is the measure of the _____ that an event will occur.
outcome
likelihood
measure
possible
If the probability of an event is 105 , which of the following best describes the event?
The event will never ocurr
The is a small chance that the event will occur
The event is likely to occur
The event will definitely occur
The event is equally likely to occur
Find P(the sum is greater than 7) =
18/36
15/36
12/36
9/36
Find P(even number sum) =
18/36
24/36
6/36
30/36
If a student was randomly chosen from this population, find P(male) = ?
.5
.6238
.4917
.4291
In a pet store, there are 6 puppies, 4 gerbils, and 7 parakeets. If a pet is chosen at random, what is the probability of choosing a puppy or a parakeet?
11/17
13/17
10/17
None of the above
A number from 1 to 10 is chosen at random. What is the probability of choosing a 5 or an even number?
3/5
1/2
1/5
None of the above
What is the sample space?
6 bears
orange, green, red, white, yellow
2 red, 1 green, 1 orange, 1 yellow, 1 white
2 , 1, 1, 1, 1
What is the sample space for a standard six-sided die?
1, 2, 3, 4, 5, 6
6
100%
2, 3, 4, 5, 6
Find the probability of rolling greater than a 1 on a single die.
6/6
5/6
4/6
1/6
Find P(MM)
13242
13235
13220
2313
There are 10 counters in a bag, 3 red and 7 blue.
I take one counter, then another without replacement.
Find the probability of the value marked x
7/10
3/10
6/9
2/9
There are 10 counters in a bag, 3 red and 7 blue.
I take one counter, then another without replacement.
Find the probability of the value marked x
7/10
3/10
6/9
2/9
There are 10 counters in a bag, 3 red and 7 blue.
I take one counter, then another without replacement.
Find the probability of the value marked w
7/10
3/10
6/9
2/9
There are 10 counters in a bag, 3 red and 7 blue.
I take one counter, then another without replacement.
Find the probability of picking one of each colour counters.
21/90
48/90
42/90
10/19
Two dice are rolled and it is recorded whether the result on each is odd or even. What is the probability both are odd?
1/4
1/2
2/4
3/4
How many females studied Spanish?
13
30
24
17
How many Males studied a language in total?
41
72
31
41
What value should go in the blue box?
21
135
19
22
How many students in total do not have a cell phone?
13
9
22
78
How many students were surveyed in total?
78
22
70
100
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
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
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
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
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
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
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
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 independently or with an adult?
15/60
48/60
33/120
48/120
P(not A) *simplest form
6/8
3/4
2/8
1/4
You have a jar with 24 pieces of chocolate candy and 14 pieces of orange candy. We take one piece of candy at random from the jar, put it back, and then take a second piece of candy at random from the jar.
Is the event INDEPENDENT or DEPENDENT?
Amy plays card games. She picks a card at random. Then without putting the first card back, she picks a second card at random.
Independent
Dependent
The spinner is spun twice. What is the probability that it lands on red first and then blue?
There are 4 black marbles and 2 white marbles in a bag. What is the probability of choosing a black marble, not replacing it, and then choosing white.
4/15
3/17
2/5
2/19
Cole has two bags of marbles. The first bag contains 6 red, 5 blue, & 4 green marbles. The second bag contains 3 red, 2 blue, & 4 green marbles. Cole will randomly select 1 marble from each bag. What is the probability he selects a blue marble from each bag?
5/9
1/35
1/6
2/27
What is the probability you will choose either a black or white marble?
Find the probability of rolling greater than a 1 on a number cube.
1/2
5/6
4/6
1/6
Find the probability of rolling a 7 on a number cube.
1/6
7/6
0
7/7
How many total combinations are represented?
12
22
3
18
5 green
6 yellow
8 blue
7 brown
p(yellow)
1/2
1/6
1/8
1/4
This table shows the sum of rolling 2 dice. What is the probability of getting a 6?
5/36
6/36
5
1/36
*Remember to simplify.*
Determine the probability of landing on an odd number.
25%
30%
50%
75%
Determine the probability of rolling a number less than 3.
33%
25%
50%
In this bag of marbles, determine the probability of picking a red marble.
55%
75%
45%
5 green
6 yellow
8 blue
7 brown
P(green) =
If you are picking a card randomly from a deck of cards, the events of picking a jack and picking a heart are mutually exclusive.
True
False
When rolling a 6 sided die, what is the probability of rolling either an even number or a 5?
1/2
5/6
2/3
1/12
Danny has 20 chocolates. 5 are milk chocolates, 10 are dark chocolates, and 5 are white chocolates. What is the probability of getting a milk chocolate or a dark chocolate?
3/4
1/2
1/15
3/10
The chance of rolling a 2 is 1/6. What is the chance of not rolling a 2?
2/6
1/6
5/6
Not possible
How likely are you to NOT roll a 1 on a regular die? (Complement)
P' = 2/6
P' = 3/6
P' = 5/6
P' = 1/6
The probability that a randomly chosen American is a Republican is 0.47. What is the probability that a randomly chosen American is not Republican?
0.35
0.53
0.47
0.43
If Mrs. Mack polls the class and asks, "What is your favorite pizza topping?" Suppose that the responses include: 10% cheese; 30% pepperoni; 25% sausage; 5% ham. What percent of the class have another opinion?
20%
30%
35%
This cannot be calculated.
If Mrs. Diskin polls the class and asks, "What is your favorite pizza topping?" Suppose that the responses include: 10% cheese; 30% pepperoni; 25% sausage; 5% ham. What is the probability that a student responded "pepperoni" or "sausage"?
30%
25%
55%
This cannot be calculated.
Pr(A∣B)
Pr(A∩B)/Pr(B)
Pr(A∩B)/P(A)
Pr(B∣A)=
Pr(B⋂A)/Pr(B)
Pr(B⋂A)/Pr(A)
If you flip a coin two times, is it independent or dependent probability?
Independent
Dependent
If you draw out a red marble, keep it, then draw out a blue marble, is it independent or dependent probability?
Independent
Dependent
What is the probability of flipping a coin twice and landing on tails both times? (leave answer in fraction form in lowest terms)
1/2
2/2
4/1
1/4
If you flip a coin then roll a number cube, is it independent or dependent probability?
Independent
Dependent
What is the probability of picking a blue marble, putting it back in the bag, then picking a red marble? (leave answer in fraction form in lowest terms)
9/49
16/49
12/42
12/49
What is the probability of picking a green marble, keeping it, then picking another green marble? (leave answer in fraction form in lowest terms)
9/49
1/7
3/14
6/42
What is the P(blue)?
(leave answer in fraction form in lowest terms)
1/3
1/6
1/2
2/6
If you spin two times, what is the probability of landing on green both times? (leave answer in fraction form in lowest terms)
1/6
1/9
1/36
1/30
What is the probability of picking a green marble, keeping it, then picking green again? (leave answer in fraction form in lowest terms)
1/7
1
1/49
0
What is the probability of picking a red marble and keeping it, picking another red marble and keeping it, then picking a blue marble? (leave answer in fraction form in lowest terms)
2/105
4/343
2/63
4/210
Sarah has two spinners. Spinner A has six equal sections and spinner B has eight equal sections. Sarah will spin the two spinners at the same time. What is the probability that both spinners will land on a color that is not red? (leave answer in fraction form in lowest terms)
1/6
4/7
1/3
2/6
What is the probability of Occurrence of 'King ',when a card is drawn from a pack of 52 cards.
1/13
1/14
1/15
1/16
The probability of an event 'A'is occurring when it is known that the event 'B' has occurred is called.........
conditional probability of the event 'A'
conditional probability of the event 'B'
None of these
Conditional probability of the event 'A'given that 'B' has occurred is denoted by
P(A|B)
P(B|A)
P(AB)
P(BA)
Addition theorem on probability
Multiplication theorem on probability
Conditional theorem on probability
None of these
The occurrence or non-occurrence of an event 'A' is effected on the occurrence or non-occurrence of another event 'B' ,then the events A,B are independent events.
True
False
The formula for the conditional probability of the event 'A' ,given that the event 'B' has occurred is
P(A|B) = P(B)P(A∩B)
P(B|A) = P(B)P(A∩B)
P(A|B) = P(A)P(A∩B)
None of these
If A,B are independent events ,then P(A|B) =
P(A)
P(B)
P(A∩B)
P(A∪B)
Not Mutually Exclusive
