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Mathematics, 26.11.2019 03:31 mckinzirauch9

1. concentrations of a pollutant were measured at 25 locations in a lake after rains caused heavy runoff from surrounding areas. after a period of dry weather, they were measured again at the same locations. the data are in the file runoff. find a 90% confidence interval for the effect of runoff on pollutant concentrations.

2. repeat problem 1 treating the rainy and dry measurements as independent samples. compare the results. which is the better procedure?

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