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Mathematics, 01.08.2019 06:30 angelicahouston8727
Independent random samples of vehicles traveling past a given point on an interstate highway have been observed on monday versus wednesday. for 16 cars observed on monday, the average speed was 59.4 mph, with a standard deviation of 3.7 mph. for 20 cars observed on wednesday, the average speed was 56.3 mph, with a standard deviation of 4.4 mph. at the 0.05 level, and assuming normal populations, can we conclude that the average speed for all vehicles was higher on monday than on wednesday?
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