Analyst B , following the exact same procedure, carries out an analysis of the same acid...

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?

Expert Solution

the standard deviation is the expression +/- 0.008M, and +/-0.004M

queen_honey_blossom answered 2 years ago

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