Please explain what type of test to perform a statistical
significant difference of 0.05 and how to perform it on excel.
Treatment: Non-treated supernatant, n=2, but each sample is
measured twice, so there are 4 concentrations: 16.425, 16.175,
18.325, 17.925
Treatment: Stressed supernatant, n=2, but each sample is measure
twice, so there are 4 concentrations: 2.425, 2.925, 3.175,
2.355