3/13/20 1 AIM: How do we find the probability of independent and dependent events? Warm Up A spinner is labeled red, yellow, blue, and green. The number cube is labeled from 1 to 6. a) Find P(red, even) b) Find P(green or blue, 5) Homework: see website 1 AIM: How do we find the probability of independent and dependent events? New Vocabulary/Mini Lesson As you watch the video clip, we will stop to discuss the following questions: 1) Why is the weather example considered an independent event? 2) Why is the 2 apples and golf ball example considered a dependent event? 2 AIM: How do we find the probability of independent and dependent events? New Vocabulary Compound Probability is the probability of more than one event. 3 AIM: How do we find the probability of independent and dependent events? Mini Lesson A bag contains 10 jelly beans (3 green, 4 orange, and 3 yellow). Sarah randomly picks 2 jelly beans from the bag. INDEPENDENT EVENT After Sarah chooses the first jelly bean, she puts it back in the bag and then grabs the second. P(green, orange) = DEPENDENT EVENT After Sarah chooses the first jelly bean, she eats it and then grabs the second. P(green, orange) = 4
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Transcript
3/13/20
1
AIM: How do we find the probability of independent and dependent events?Warm Up
A spinner is labeled red, yellow, blue, and green. The number cube is labeled from 1 to 6.
a) Find P(red, even)
b) Find P(green or blue, 5)
Homework: see website
1
AIM: How do we find the probability of independent and dependent events?New Vocabulary/Mini Lesson
As you watch the video clip, we will stop to discuss the following questions:
1) Why is the weather example considered an independent event?
2) Why is the 2 apples and golf ball example considered a dependent event?
2
AIM: How do we find the probability of independent and dependent events?New Vocabulary
Compound Probability is the probability of more than one event.
3
AIM: How do we find the probability of independent and dependent events?Mini Lesson
A bag contains 10 jelly beans (3 green, 4 orange, and 3 yellow). Sarah randomly picks 2 jelly beans from the bag.
INDEPENDENT EVENTAfter Sarah chooses the first jelly bean, she puts it back in the bag and then grabs the second.
P(green, orange) =
DEPENDENT EVENTAfter Sarah chooses the first jelly bean, she eats it and then grabs the second.
P(green, orange) =
4
3/13/20
2
AIM: How do we find the probability of independent and dependent events?Mini Lesson
INDEPENDENT or DEPENDENT
P(spin 2, roll 4) =
cards are not replaced after the first pick
P(red, black) =
INDEPENDENT or DEPENDENT
INDEPENDENT or DEPENDENT
dice is rolled twice
P(even, 2 or less) =
5
AIM: How do we find the probability of independent and dependent events?Self Assessment
How do you feel about the examples?
6
AIM: How do we find the probability of independent and dependent events?Explore
Independent vs. Dependent Events
#1-4 #2-5 #3-6
Early Finishers: Extension question on back of handout. Show all work.
7
AIM: How do we find the probability of independent and dependent events?Summary
Shareout #3
Mrs. Ameldo’s class has 5 students with blue eyes, 7 with brown eyes, 4 with hazel eyes, and 4 with green eyes. Two students are selected at random. What is the probability that the two randomly chosen students will have not brown eyes first, and then will have brown eyes?
8
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