Questions: Multiple Choice Question How do scientists determine whether the results of an experiment differ between an experimental group and a control group? They reduce the system to its parts, and examine molecular patterns. They assume that their hypothesis is correct and interpret the data accordingly. They replicate the experiment to determine if they can achieve the same results. They analyze the data with statistics.

The answer is the fourth one: They analyze the data with statistics.

Explanation for each option:

1. They reduce the system to its parts, and examine molecular patterns.

   • This option describes a method of analysis that might be used in certain types of scientific research, particularly in fields like molecular biology. However, it does not specifically address how scientists determine differences between experimental and control groups.

2. They assume that their hypothesis is correct and interpret the data accordingly.

   • This option is incorrect because it describes a biased approach. Scientific methodology requires that hypotheses be tested objectively, and data should be interpreted without assuming the hypothesis is correct.

3. They replicate the experiment to determine if they can achieve the same results.

   • While replication is an important part of the scientific process to verify results, it is not the primary method for determining differences between experimental and control groups. Replication helps to confirm the reliability of the findings but does not directly analyze the differences.

4. They analyze the data with statistics.

   • This is the correct answer. Statistical analysis is the primary method used by scientists to determine whether there are significant differences between experimental and control groups. Statistics help in assessing the variability in the data and in making inferences about the population from which the samples were drawn.

Summary: Scientists determine whether the results of an experiment differ between an experimental group and a control group by analyzing the data with statistics. This method allows them to objectively assess the significance of any observed differences.