SOLUTION: A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm). Listed below are the amounts of mercury​ (ppm) found in tuna sushi sampled at dif

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Question 1162161: A food safety guideline is that the mercury in fish should be below 1 part per million​ (ppm). Listed below are the amounts of mercury​ (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 99​% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna​ sushi?
0.58  0.72  0.09  0.95  1.36  0.55  0.84
What is the confidence interval estimate of the population mean mu​?
Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
The mean of these values is 0.727 ppm with s=0.392 ppm
The half-interval for 99%CI is t df=6 0.995*s/sqrt (n), and t=3.707
the interval then is 0.549
the CI is then mean +/- that or (0.178, 1.276) units ppm. Because 1 ppm is in the interval one may conclude that there is too much mercury in the sushi