P4. Probability Essential Question: How is an independent event defined?

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Presentation transcript:

P4. Probability Essential Question: How is an independent event defined?

Activation How are these two situations different: There are 5 marbles in a bag what is the probability of getting a red one on the second try if three are red and 2 are blue if you choose a marble and replace it? There are 5 marbles in a bag what is the probability of getting a red one on the second try if three are red and 2 are blue if you choose a marble but keep it out?

P4. Probability Independence: When the outcome of one event does not impact the outcome of another event.

Probability If all outcomes are successful, the probability will be 1 If no outcomes are successful, the probability will be 0 So…Probability is 0 ≤ P ≤ 1

Examples What is the probability of getting an ace from a deck of 52 cards? What is the probability of rolling a 3 on a 6 sided die?

More Examples What is the probability of rolling an even number?

More Examples What is the probability of getting a total of 5 when a red die and green die is rolled?

More Examples What is the probability of getting 2 spades when 2 cards are dealt at the same time?

Home Work Worksheet 4