Probability - Home

2. Jamar and Yvonne are playing
a game with this spinner.
Jamar wins a point if the
pointer lands on green or blue.
Yvonne wins a point if the
pointer lands on red or yellow.
Is this a fair game? Explain.
A fair game
is one where all
players are equally
likely to win.
3. Suppose you put counters in a bag.
Someone will draw 1 counter from it.
Describe, with pictures or words, the counters you would put
in the bag for each situation. Explain how you decided
how many counters of each colour to use.
a) Red is certain to be drawn.
b) Red and blue are equally likely to be drawn.
c) Green is more likely than red to be drawn, but less likely than yellow.
d) Blue is likely, but not certain, to be drawn.
4. Anise cut out the numbers on a 100 chart
and placed them in a bag.
She drew one number at random.
a) What is the probability that the number is even?
Is a multiple of 10?
b) Describe an event for which the probability is 1 5 .
5. A simulation is an experiment that models
a situation. Explain how you could use a coin
in a simulation to determine this probability:
In a family of 4 children, there are exactly 2 boys
and 2 girls.
1 2 3 4 5 6 7 8 9 10
11 12 13 14 15 16 17 18 19 20
21 22 23 24 25 26 27 28 29 30
31 32 33 34 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50
51 52 53 54 55 56 57 58 59 60
61 62 63 64 65 66 67 68 69 70
71 72 73 74 75 76 77 78 79 80
81 82 83 84 85 86 87 88 89 90
91 92 93 94 95 96 97 98 99 100
6. A multiple-choice test has 5 questions.
Each question has 4 answers.
How could you use a spinner to estimate
the probability of getting 1 question correct?
Numbers Every Day
Number Strategies
Write each fraction as a percent.
• 1 5
What does it mean to say that an event is “possible,
but highly improbable”? Use examples to explain.
• 1
1
0
3
0
• 1
3
0
• 2
7
0
ASSESSMENT FOCUS Question 3
Unit 11 Lesson 1 367