A food safety guideline is that the mercury in fish should be below 1 part per million (ppm). Listed below are the armounts of mercury (ppm) found in tuna sushi sampled at different stores in a major city. Construct a 95% confidence interval estimate of the mean amount of mercury in the population. Does it appear that there is too much mercury in tuna sushi? 0.56 0.70 0.11 0.89 1.35 0.56 0.93 What is the confidence interval estimate of the population mean u? ppm

A normally distributed data set has a mean of O and a standard deviation of 2. What is the percent of values between -6.0 and 6.0? (make sure to include % sign in answer.)

assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation of 0.070 g. A vending machine will only accept coins weighing between 5.48 and 5.82 g. what is the percentage of legal quarters that will be rejected?