Hikaru wants to test a new method for nitrite analysis in well water. Before using it he checks the method by using it to measure nitrite in a standard reference solution of sodium nitrite. The reference solution is 55.55 micromolar sodium nitrite. Seven replicate nitrite determinations of the solution return the following (in micromolar): 68.32, 57.83, 54.62, 52.98, 51.26, 57.00, 52.36.
Using a = 0.05 and a t-test, is there any evidence that the analysis is giving inaccurate results? Show your work. If the results are inaccurate you must express the bias (positive or negative) for the technique.
Hikaru wants to test a new method for nitrite analysis in well water. Before using it...