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Mathematics, 16.04.2020 00:41 kendrawalraven
Commuting. there are two routes he could take to work. Aneighbor who has lived there a long time tells him Route Awill average 5 minutes faster than Route B. The man decides to experiment. Each day he flips a coin to determine which way to go, driving each route 20 days. He finds that Route Atakes an average of 40 minutes, with stan- dard deviation 3 minutes, and Route B takes an average of 43 minutes, with standard deviation 2 minutes. His- tograms of travel times for the routes are roughly sym- metric and show no outliers. a. Find a 95% confidence interval for the difference in average commuting time for the two routes. b. Should the man believe the old-timer s claim that he can save an average of 5 minutes a day by always driving Route A
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Commuting. there are two routes he could take to work. Aneighbor who has lived there a long time tel...
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