Two analysts are analysing a blood sample for irnn mami... A. virun ror outliers in the two data sets at a=0.10 (select only one spected value per data set) B. Is the mean reported by Analyst B significantly higher than the mean reported by Analyst A ? =0.05 C. Which analyst is the most precise? D. Which analyst was more accurate if several external laboratories also analysed this sample and determine the Fe content to be 1.58ppm ? E. Which analyst would you have wanted to employ? Question 5 Two laboratories are analysing an tablet parcel for paracetamol content. A. Which laboratory was the most accurate if the true value of paracetamol was found to be 250mg/tablet ? B. Which laboratory was the most precise? C. Is there a significant difference in the mean values reported by the two laboratories? =0.05 Basic statistical exercises Question 1 The following data table is presented to you after an analysis. 1.1. Calculate the mean copper content determined by each method. 1.2. Calculate the sample standard deviation for the measurements made by each method. 1.3. Calculate the variance for the measurements made by each method. 1.4. Calculate the relative standard deviation for the measurements made by each method. Question 2 The following data table is presented to you after an analysis. 2. 1. Draw a simplistic histogram to illustrate the distribution of data. 2.2. Does the distribution of the data belong to a normal distribution or normal-log distribution? Explain the reason for your answer. 2.3. Find the proportion of measurements that lie between 0.895.0.915mg/mL. 2.4. Find the proportion of measurements that se between 0.975.0.988mg/mL 2.5. Find the proportion of measurements that lie between 0.9151.018mg/mL 2.6. Determine the 95% confidence limits for these measurements: Question 3 In a testing laboratory they are evaluating two methods for the determination of copper in soil samples. A certified reference material (21.50ppmCu) was analysed using both methods and the measurements tabulated below: 3.1 Is there a significant difference between the precision of these two methods? Explain answer. 3.2 Which method is more accurate and which is more precise? Explain answer. 3.3 Is there a significant difference between the accuracy of these two methods? Explain answer. 3.4 Which method would be the most appropriate to use for the determination of copper in this case? Explain