WorksheetsYear 9 Term 4 Quiz 1 - Probability
Total questions: 25
Worksheet time: 53mins
Name
Class
Date
1.
What is the probability of spinning green?
a)
0
b)
1/4
c)
1/2
d)
3/4
2.
A box contains 5 purple marbles, 3 green marbles and 2 orange marbles. Draws are made without replacement.P(both marbles are purple)
a)
2/9
b)
1/3
c)
1/2
d)
1/4
3.
P(not A) =
*Remember to simplify.*
*Remember to simplify.*
a)
6/8
b)
3/4
c)
2/8
d)
1/4
4.
The chart below represents the number of marbles in a jar.
P(green) =
P(green) =
a)
5/19
b)
10/28
c)
5/14
5.
Find the experimental probability of spinning Letter Q.
a)
15/15
b)
3/10
c)
3/50
d)
7/10
6.
If I roll a die 30 times, it should land on '4' five times. Is this an example of theoretical or experimental probability?
a)
Theoretical
b)
Experimental
7.
I spun a spinner 20 times and landed on red 7 times. Is this an example of theoretical or experimental probability?
a)
Theoretical
b)
Experimental
8.
Change this decimal to a percent.
0.528
0.528
a)
528%
b)
52.8%
c)
5.28%
d)
52%
9.
A probability near 1 is _______.
a)
never going to happen
b)
very likely to happen
c)
probably never going to happen
d)
equally likely to happen
10.
Probability is ...
a)
the chance that some event will occur.
b)
a game that involves coins.
c)
a guarantee.
d)
a word Mr. Macias created for fun.
11.
Probability can be written as ...
a)
a fraction
b)
a decimal
c)
a percent
d)
all of the above
12.
The probability of it raining today is 30%. What is the probability that it will NOT rain?
a)
30%
b)
70%
c)
100%
d)
0%
13.
A set of all possible outcomes is known as -
a)
a list
b)
a complement
c)
a sample space
d)
an event
14.
Theoretical Probability is?
a)
What Should happen
b)
What does happen
c)
What Will Happen
d)
What I want to Happen
15.
Experimental Probability is:
a)
What Will happen
b)
What actually happens
c)
What should happen
d)
What I think Happens
16.
A set of all possible outcomes is known as -
a)
a list
b)
a complement
c)
a sample space
d)
an event
17.
What is an outcome?
a)
The result of an experiment
b)
The chance or likelihood of an event
c)
A fraction, decimal, or a percent
d)
An activity that gives various results
18.
The probability of an event occurring, P(A), can be expressed as a fraction, decimal, or percent.
a)
True
b)
False
19.
The probability that an event does NOT occur is
a)
highly unlikely
b)
1 - the probability that it does occur
c)
a matter of opinion
d)
always less than the probability that it does occur
20.
What is represented in the Venn diagram?
a)
A
b)
B
c)
A ∪ B
d)
A ∩ B
21.
The set of all outcomes not included in the event is the _________
a)
complement
b)
P(event)
c)
as likely as not
d)
probabilty
22.
Deion has two bags of marbles. In the bag labeled ‘A’, he has 3 green, 4 blue and 10 yellow marbles. In the bag labeled ‘B’, he has 13 green, 5 blue, and 12 yellow marbles. Deion wants the bag with the highest probability of selecting a blue marble. Which of the following statements is true?
a)
It does not matter which bag he chooses because the probabilities are the same.
b)
He should choose Bag B because there are fewer blue marbles.
c)
He should choose Bag A because the probability of selecting a blue marble is higher.
d)
He should choose Bag B because the probability of selecting a blue marble is higher.
23.
Olivia and Cody both have spinners with the color purple. Olivia determines that the probability of spinning purple on her spinner is 4 out of 12. Cody determines that the probability of spinning purple on his spinner is 3 out of 10. Which of the following statements is true?
a)
Olivia’s spinner has the highest probability of spinning purple.
b)
Cody’s spinner has the highest probability of spinning purple.
c)
Both spinners have equal probabilities of spinning purple
d)
There is not enough data to determine which spinner has the highest probability of spinning purple.
24.
Which shows the sample space for flipping two coins?
a)
H, T
b)
HH, HT, TH, TT
c)
HH, TT
d)
Dime, Nickel
25.
A coin is flipped 3 times, determine the probability that we will get exactly two heads
a)
3/8
b)
2/8
c)
1/2
d)
1/4
100 %
