Question

The FDA’s webpage provides some data on mercury content of fish. Based on a sample of 15 salmon fish in the Pacific Ocean, a sample mean was computed as 0.31 (parts per million). The sample's standard deviation was 0.07 ppm. The 15 observations ranged from 0.18 to 0.41 ppm, telling us that the sample data is symmetric and with no significant outliers; however, we don’t know if the data is Normally distributed. Construct an appropriate 95% confidence interval for the true average mercury content of Pacific salmon .

Answer 1