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Quick Start Expectations1. Fill in planner and HWRS
HW: WDYE p. 80-81 #1-62. Get a signature on HWRS3. On desk: journal, calculator, HWRS, pencil, pen
4. Warm Up: A survey contains four questions with 2 possible
answer choices: “yes” and “no.” How many possible ways are there to answer the survey?
(Hint: Tree Diagram)
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A survey contains four questions with 2 possible answer choices: “yes” and “no.” How many possible ways are there to answer the survey?
Question 2Question 1 Question 3
Shortcut? 2 x 2 x 2 x 2 =
Question 4Events:
Start
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p.71
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p.72
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Miguel has divided the square into 3 equal rows. This is reasonable because it represents the probability of drawing a red or green marble from Bucket 1.
p.73
1/3
1/3
1/3
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1/4 1/4 1/4 1/4
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P (red) = 6/12 = 1/2P (blue) = 3/12 = 1/4
P (green) = 9/12 = 3/4
P (yellow) = 3/12 = 1/4
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According to this area model what is in each bucket:Bucket 2
Buck
et 1
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1. What is the area of each sectionif the rectangle is 100 square units?
2. What fraction of the whole square is each section?
3. How do the fractions in #2 compare to the probabilities of each section?
RY =10 sq. units, RB = 10 sq. units, GY = 40 sq. units, GB = 40 sq. units
1/10 1/10
4/104/10
The probabilities and the fractions of the areas are the same for each section!
p.74
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1/10 1/10
4/10 4/10
R to G is 1:4
What are the ratios of R to G and Y to B?
Y to B is 1:1
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Ratios of R to G is 1:4 and Y to B is 1:1
YES!
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YES!
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YES!
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HW: WDYE p. 80-81 #1-6