A diagnostic laboratory routinely performs assays serum cholesterol levels. The assay's manufacturer provides two standards one for high serum cholesterol and one for serum cholesterol. The mean for the high standard is 231.82 mngL with a standard deviation of 4.43 while the mean for the low standard is 108.60 mg/dL with a standard deviation of 2.35 i. Why would it be inappropriate to just use standard deviation to compare the precision of the assay with the high standard to the precision of the assay to the low standard? ii. Is the assay more precise at the low or high serum creatine kinase levels? Explain your