Mathematics, 23.07.2019 23:50 nacgrading3p6d8pf
Afood 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 9999% confidence interval estimate of the mean amount of mercury in the population. does it appear that there is too much mercury in tuna sushi? what is the confidence interval estimate of the population mean
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![\begin{tabular}{|c|c|c|}x&$x-\bar{x}$&$(x-\bar{x})^2$\\[1ex]0.55&-0.17&0.0289\\0.74&0.02&0.0004\\0.09&-0.63&0.3969\\0.96&0.24&0.0576\\1.32&0.6&0.36\\0.50&-0.22&0.0484\\0.91&0.19&0.0361\\[1ex] \Sigma x=5.07&&$\Sigma(x-\bar{x})^2=0.9283\end{tabular}\\ \\ \bar{x}=\frac{5.07}{7}=0.7243\\ \\s= \sqrt{\frac{\Sigma(x-\bar{x})^2}{n-1}} = \sqrt{\frac{0.9283}{7-1} }=\sqrt{\frac{0.9283}{6} }=\sqrt{0.1547}=0.3933](/tpl/images/0125/2258/aeea1.png)
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Afood safety guideline is that the mercury in fish should be below 1 part per million (ppm). listed...
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