Mathematics, 26.10.2019 01:43, JEThompson6416
An industrial plant dumps its waste into a nearby river, but claims that it is not impacting the native fish that live in the river. you’ve measure the calcium concentration from a random sample of 24 locations in the river and calculated a mean of 98.4 mg/l, with a standard deviation of 5.1 mg/l. the fish are able to tolerate calcium concentrations up to 95 mg/l. assuming a normal distribution, calculate a 95% confidence interval for the mean calcium concentration in the river.
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