There was an accident at the industrial plant subsequent to


There was an accident at the industrial plant. Subsequent to the spill into the creek he water had Cr levels of 1.10 ppb n=6, S= 0.08. Could you state with 95% confidence that the Cr level in the creek had rise, that are these samples statistically the same as the values in part b? Part b values- 0.89, 0.92, 0.94, 0.97, 1.02. Mean = 0.948, std dev = 0.0497, 95% confidence interval: +/- 0.06

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Chemistry: There was an accident at the industrial plant subsequent to
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