PROBABILITY
Coin Flip s
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Experiment 1: Two coins. Flip both coins at the same time. Place a tally mark in the
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Two
Heads
Two
Tails
One
Each
Consider: Did all three outcomes occur about the same number of times? If not,
which outcome was most likely? Which outcome was least likely? Do you think
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Experiment 2: Three coins. Flip three coins at the same time. Place a tally mark in the
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Three
Heads
Two
Heads
&
One
Tails
Two
Tails
&
One
Heads
Three
Tails
Consider: Did all four outcomes occur about the same number of times? If not,
which outcome was most likely? Which outcome was least likely? Do you think
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82
Beast Academy Practice 4D
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PROBA
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PRACTICE
Use the diagram below to help you answer the questions that follow.
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The tree diagram on the right displays all of
the possible outcomes for Winnie’s penny and
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Penny Nickel
H
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T
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43. ________
penny and Grog’s nickel?
44.
44. ________
What is the probability that Winnie’s penny will land heads and
Grogg’s nickel will land tails?
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45. ________
46.
46. ________
What is the probability that Grogg’s coin will land with the same face
up as Winnie’s coin?
PRACTICE
Answer each question below.
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47. ________
land tails?
48
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those times do you expect both coins to land heads? Circle one answer.
Beast Academy Practice 4D
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PROB
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C o i n F lip
PRACTICE
Answer the questions below. Express your answers as
fractions in simplest form.
49.
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Create a tree diagram to display all of the possible outcomes for
Winnie’s penny, Grogg’s nickel, and Alex’s dime.
50.
How many possible outcomes are in your tree diagram above?
50. ________
51.
What is the probability that all three coins will land heads?
51. ________
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52. ________
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53. ________
Beast Academy Practice 4D
PROBA
BnILFliITY
Coi
ps
PRACTICE
Answer the questions below. Express your answers as
fractions in simplest form.
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54. ________
land heads?
55. ________
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will land heads?
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56. ________
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57. ________
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58
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times do you expect exactly two coins to land heads?
Beast Academy Practice 4D
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85