Objectives:Understand Probability and Odds
Understand Probability of Mutually Exclusive and Mutually Inclusive Events
Find the probability and odds of different situations
Standards:2.6,2.7
Probability and Odds
Situation: I have 4 green, 12 red and 6 blue marbles in a bag.If selected at random, what is the probability of selecting…
A) P(3 green) B) P(5 red) C) P(2 blue)
D) P(3 green and 4 red) E) P(4 green and 2 red and 1 blue)
How many muscles does a cat have in each ear?
Another way of measuring the chance of an event occurring
Calculations:
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want
FP
SP
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32. The weather forecaster said that the probability of rain today is 60%. Find the odds that it will not rain today.
33. A coach said that there was a 75% chance that his star player would not play in the game. What are the odds that the player will play?
34. Given odds of 4:7, find P(S) and P(F).
35. A box contains 4 red, 3 blue, and 8 green chips. What are the odds of picking 2 green and 2 red chips? (Without replacing the chips and only picking four chips)
36. A box contains 5 red marbles and 7 green marbles. Find the probability of drawing 2 red marbles:
A)With replacement
B)Without replacement
Prob and Odds Worksheet (#15-18)
Independent Events: Events that DO NOT affect each other
Dependent Events: Events that DO affect each other
Probability of 2 Independent Events Occurring:
Probability of 2 Dependent Events Occurring:
P(B)P(A)B) andP(A A) following P(BP(A)B) andP(A
Probability of Mutually Exclusive Events
Probability of Mutually Inclusive Events
P(B)P(A)B)or P(A P(A or B)
P(A)+P(B)-P(A and B)
Worksheet
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