1.) For each indicator, you will perform four runs, which you will use to determine the concentration of HCl. a.) What test will you use to determine the reproducibility of your results? b.) Does this test indicate the precision or accuracy of your results?

2. a.) What test will you use to determine if a particular trial should be removed? b.) For this experiment, what other reasons might warrant the removal of a particular test result?

3. You will perform four runs with two different indicators. What test will you use to determine if the two indicators provide the same mean, within experimental error? (Assume that the standard deviation was similar for both tests.)

4. In this lab, you will pool your results with other students in the class to compare results from two indicators. a.) What test will you use to determine if results from two indicators had statistically significant differences in standard deviation? b.) How will differences in standard deviation impact your analysis?

5. Calculate the mass of tris (121.4 g/mol) required to react with 35-40 mL of 0.10 M HC1.