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11-8 Geometric Probability

11-8 Geometric Probability. Example. If you threw a magnet and it landed on the picture from the warm up, what is the probability that the magnet lands ins ide the small circle? (known as the “bull’s eye”) Area you are trying for Total Area. RULE:. To find the Geometric Prob:

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11-8 Geometric Probability

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  1. 11-8 Geometric Probability

  2. Example If you threw a magnet and it landed on the picture from the warm up, what is the probability that the magnet lands inside the small circle? (known as the “bull’s eye”) Area you are trying for Total Area

  3. RULE: To find the Geometric Prob: Area of what they ask for Area of WHOLE shape

  4. Example Draw a line GR Draw point L as the midpoint of GR Draw point A as the midpoint of LR Draw point H as the midpoint of AR What portion of GR is LH? 4 2 1 1 G L A H R 3/8

  5. Example • A subway stops every 20 minutes, waits 3 minutes and then leaves. If you arrive at a random time, what is the prob. you will be able to board the train? Shortcut: It’s always “little”/”big” –Reduce when necessary!! 3_ 20

  6. TOO • Page 462 #1-3 • ***Watch Out #1—Use RW not whole line Answers: 1)a) 1/5 b) 3/5 c) 4/5 d) 1 e) 0 f) 1 2) 1/3 3) 15π/100 = 0.471, π/100 = 0.031

  7. Homework • Page 463 #1-5,skip 4b • Pg. 465 Self Test #1-7, skip 6b • QUIZ Tomorrow! • Study Session: Wed. 2:30-3:15

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