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Lesson 2 - Theoretical Probability
Richard has a bag that contains 20 coloured marbles. He pulls a marble out of the bag and then returns the marble back into the bag.
Match each colour with the theoretical probability of pulling that colour out of the bag.
a.
f.
b.
g.
c.
h.
d.
i.
e.
j.
A
B
C
D
E
F
G
H
I
J
1.
red
A
B
C
D
E
F
G
H
I
J
2.
blue
A
B
C
D
E
F
G
H
I
J
3.
yellow
A
B
C
D
E
F
G
H
I
J
4.
purple
A
B
C
D
E
F
G
H
I
J
5.
green
A
B
C
D
E
F
G
H
I
J
6.
orange
A
B
C
D
7.
Maria has a spinner that is divided in to 5 equal sections. Each section is a different colour.
What is the theoretical probability of spinning a yellow?
a.
b.
c.
1
d.
A
B
C
D
8.
Ty has a spinner that is divided into 5 equal sections where 3 sections are yellow and 2 sections are red.
What is the theoretical probability of spinning a yellow?
a.
b.
3
c.
d.
A
B
C
D
9.
Lisa rolls a die.
What is the probability that she rolls an even number?
a.
b.
c.
3
d.
A
B
C
D
10.
Suppose you pick one of the ten linking cubes from a box.
Which outcome has the greatest theoretical probability?
a.
picking a blue cube
c.
picking a green cube
b.
picking a red cube
d.
picking a yellow cube