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