In: Chemistry
Analyst B
, following the exact same procedure, carries out an analysis of the same acid and
reports a concentration of 6.772 ± 0.004 M, after performing 6 successful titrations (no data was
rejected).
Questions:Is this result obtained by Analyst B in agreement with that of Analyst A, at a 90% confidence level?
The certified analysis record for the concentrated sulfuric acid is found and states that the acid has a concentration of 6.759 M. Do either of the Analysts results agree with this concentration at the 90% confidence level?
Analyst A had a value of 6.75 +/- 0.008M.
My question is, how to I calculate the confidence levels if I'm not given the standard deviation? Do I just use the uncertainty?