Q1 (10 points) A pharmacist has recently started a new private pharmacy and wanted to estimate the average waiting time to get prescribed medication in his pharmacy. He randomly selected 40 patients for observation and recorded how many minutes each waits. The mean waiting time was 28 minutes. Assuming that the waiting time follow a normal distribution with the standard deviation of 4 minutes, estimate the mean waiting time among all patients using a 95% confidence interval. Interpret this interval. 02 (10 points) Health Canada wishes to estimate the mean amount of mercury pi, in parts per million (ppm), in commercial fish. Specifically, they want their estimate of the mean to be within 0.03 of thrue mean, M: with 98% confidence in their results. Assume that the amount of mercury in commercial fish varies from one fish to another, the standard deviation being 0' = 0.4 ppm. How many commercial fish should be randomly chosen, each chosen will have the mercury content measured, to satisfy Health Canadas estimation of M