Statistics > QUESTIONS & ANSWERS > STAT 200 Week 3 Homework Problems. GRADED A. BEST REVISION TOOL/ LOOK NO FURTHER (All)
STAT 200 Week 3 Homework Problems. GRADED A. BEST REVISION TOOL/ LOOK NO FURTHER
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STAT 200 Week 3 Homework Problems 4.1.4 A project conducted by the Australian Federal Office of Road Safety asked people many questions about their cars. One question was the reason that a person c ... hooses a given car, and that data is in table #4.1.4 ("Car preferences," 2013). Table #4.1.4: Reason for Choosing a Car Safety Reliability Cost Performance Comfort Looks 84 62 46 34 47 27 Find the probability a person chooses a car for each of the given reasons. Solution: Safety: 84/300 = 28% Reliability: 62/300 = 21% Cost: 46/300 = 15% Performance: 34/300 = 11% Comfort: 47/300 = 15% Looks: 27/300 = 9%4.2.2 Eyeglassomatic manufactures eyeglasses for different retailers. They test to see how many defective lenses they made in a time period. Table #4.2.2 gives the defect and the number of defects. Table #4.2.2: Number of Defective Lenses Defect type Number of defects Scratch 5865 Right shaped – small 4613 Flaked 1992 Wrong axis 1838 Chamfer wrong 1596 Crazing, cracks 1546 Wrong shape 1485 Wrong PD 1398 Spots and bubbles 1371 Wrong height 1130 Right shape – big 1105 Lost in lab 976 Spots/bubble – intern 976 a.) Find the probability of picking a lens that is scratched or flaked. [Show More]
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