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Mathematics, 05.05.2020 16:16 bskyeb14579
A researcher collects crash data at 12 intersections in NYC and found an average crash Due: Wednesday, 12/6 rate of 4.76 crashes/year with a standard deviation of 0.47 crashes/year a. Is the crash data at these 12 intersections different than the city average of 4.56 crashes/year at a 20% level of significance? Define your null and alternative hypothesis. Show your work. b. Is the crash data at these 12 intersections different than the city average of 4.56 crashes/year at a 5% level of significance? Define your null and alternative hypothesis. Show your work.
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A researcher collects crash data at 12 intersections in NYC and found an average crash Due: Wednesda...
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