p.209 #56 - 59
Lesson
4-5 Applying to Ratios to Probability Objective: To analyze real-world data, to find theoretical probability, and to find experimental probability.
I. Investigation p.210
"Understanding Probability"
II. Theoretical Probability
P(event) = (number of favorable outcomes) / (number of possible outcomes)
III. The Complement of an event
The complement of an event consists of all the outcomes not in the event.
The sum of the probabilities of an event and its complement is 1.
P(event) + P(not event) = 1
P(not event) = 1 - P(event)
IV. Experimental Probability
Probability based on data collected from repeated trials is experimental probability.
Experimental probability = (number of times an event occurs) / (number of times the experiment is done)
3 Example: Ryan flipped a quarter 6 times. The outcomes were 4 tails and 2 heads. So the experimental probability of getting heads is 2/6 or 1/3.
4-6 Probability of Compound Events
Independent events are events that do no influence one another.
If A and B are independent events,
P (A and B) = P(A) • P(B)
Homework
p.214 - 215 #3 - 45 x 3's
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