Two analysts each made six determinations of the paracetamol content of the same batch of tablets. The results are shown below:
ANALYST A:
Paracetamol content % (m/m) = 84.32, 84.51, 84.63, 84.61, 84.64, 84.51
ANALYST B:
Paracetamol content % (m/m) = 84.24, 84.25, 84.41, 84.13, 84.00, 84.30
If a seventh analysis (Trial 7)was made in the above paracetamol analysis and the result was 93.48, can this be considered as an outlier at 90% confidence? The critical value (Q) for seven (7) observations is 0.507.
A)It is an outlier, reject, and do not include in the computation of mean.
B)It is not an outlier, do not reject, and include in the computation of mean.
1 answer
So EACH analyst does a 7th replicate and obtains 93.48% and we want to know for EACH if that is an outlier; i.e., two answers?
2 answers