Exam (elaborations) Farrell_Week_3_HW.docx (1)
b.) Find the probability of picking a lens that is the wrong PD or was lost in lab. c.) Find the probability of picking a lens that is not scratched. d.) Find the probability of picking a lens that is not the wrong shape. a) Scratched: 5865/25891 = 22% Flaked: 1992/25891 = 7% b) Wrong PD: 1398/25891 = 5% Lost in lab: 976/25891 = 37% c) Not scratched: Right shaped (big) + Right shaped (small)/25891 5708/25891 = 22% d) Wrong shape: 1485/25891 = 5% 4.2.8 In the game of roulette, there is a wheel with spaces marked 0 through 36 and a space marked 00. a.) Find the probability of winning if you pick the number 7 and it comes up on the wheel. Probability: 1/38 b.) Find the odds against winning if you pick the number 7. Solution: 1-1/38 37/38
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