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 samples at different stores in a major city. Construct a 98% confidence interval estimate of the mean amount of mercury in the population. 0.52 0.79 0.10 0.87 1.32 0.50 0.90 What is the confidence interval estimate of the population mean u?