The student does not clearly state the independent and dependent variables in the research question, lacking specific measurements and units. Additionally, the posed research question does not describe the method of analysis conducted, which could enhance clarity. While the student provides relevant background theory and explains the choice of sampling technique well, they fail to adequately discuss the rationale behind the number of trials and the precision of the measurements. However, the student effectively identifies and addresses safety, ethical, and environmental issues associated with the investigation, and the methodology is described sufficiently to allow for reproducibility without irrelevant information.
