Question 1148434: 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?
0.52, 0.82, 0.10, 0.98, 1.33, 0.54, 0.94
What is the confidence interval estimate of the population mean ?
What is the confidence interval for the population mean mu?
ppm<μ
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! 99% CI
half-interval is t df=6 0.995*s/sqrt(7)
=3.71*0.40/sqrt(7)=0.56
interval is mean +/- half-interval
0.75+/-0.56
(0.19, 1.31) or (0.19 < mean < 1.31)
Since under 1 ppm is in the interval there does not appear to be too much.
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