Question- A graduate student wishes to improve the precision of a new drug assay. This student finds that one method of sample preparation gives a measured concentration of 1.025 ±0.0020 x 10-6 M (single standard deviation) for five replicate measurements of the drug. A second method gives 1.017 ±0.011 x 10-6 M (single standard deviation) for five replicate measurements of the drug. Was there any significant improvement in the precision in going from one approach to the other when these results are compared at the 95% confidence level?
How do I yet start setting this up? Thank you