Student Name: _____________________________
Date: ________________
What a Complement!
Consider each experiment below. Complete the table.
1.
A dodecahedron labeled with numbers 1-12 is rolled. List all possible outcomes below.
Outcomes:
2.
Event 1: The dodecahedron lands on 1.
Highlight all favorable outcomes for this
event.
Event 2: The dodecahedron lands on a prime
or composite number. Highlight all favorable
outcomes for this event in a different color.
P(1)=
P(prime or composite)=
You spin the spinner. List all possible outcomes below.
Outcomes:
Event 1: The spinner lands on a vowel.
Highlight all favorable outcomes for this
event.
Event 2: The spinner lands on a consonant.
Highlight all favorable outcomes for this
event in a different color.
P(vowel)=
P(consonant)=
Communicating about Mathematics
What do you notice about the probabilities for each pair of events? Why do you think this is
true?
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