Question

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 una sushi sampled at different stores in a major city. Constructa 98% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in una sushi? 0.51 0.74 0.10 0.87 1.34 0.51 0.96 What is the confidence interval estimate of the population mean? ppm<»<ppm (Round to three decimal places as needed.) Does it appear that there is too much mercury in una sushi? O A. Yes, because it is possible that the mean is greater than 1 ppm. Also, at least one of the sample values exceeds 1 ppm, so at least some of the fish have too much mercury OB. Yes, because it is possible that the mean is not greater than 1 ppm. Also, at least one of the sample values exceeds 1 ppm, so at least some of the fish have too much moroury OC. No, because it is possible that the mean is not greater than 1 ppm. Also, at least one of the sample values is less than 1 ppm, so at least some of the fish are safe OD. No, because it is not possible that the mean is greater than 1 ppm Also, at least one of the sample values is less than 1 ppm, so at least some of the fish are safe

Answer 1

Given a=0.02, d. - 7-1 = 6 from given sample we calculated, x = exi = 5:03 = 0.7186 S: (8187-31)2 = 0.93748 ( 6 S 0.3953 for a= 0.02 & dof=6 we get te= 3.143 The 98 % C.I to o u is - + texs 3.143 x 0.3953 86 + - ] p - .. (0.7186-0.47, 0.7186 +0.97 = (0.299, 1.188) 0-249 ppton 0.249 ppm 4 < 10188 ppm. o A. Yes, because it is possible that the mean is greater than I ppm, Also, at least one of the sample values exceeds 1 ppm, so at least some of the fish have too much mercury

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