Question

1. state the researchers’ hypothesis.
2. what is the control group?

Explanation:

2. What is the control group?

In a scientific experiment, the control group is a group of subjects that is not exposed to the independent variable (the factor being tested). It is used as a baseline to compare with the experimental group (the group exposed to the independent variable) to determine if the independent variable has an effect. For example, in a drug trial, the control group might receive a placebo (a substance with no active drug) while the experimental group receives the actual drug. This allows researchers to isolate the effect of the drug by comparing the outcomes of the two groups, accounting for other variables that could influence the result.

Answer:

In an experiment, the control group is a group of participants or subjects that is not exposed to the independent variable (the factor being investigated). It serves as a baseline for comparison with the experimental group (which is exposed to the independent variable) to determine if the independent variable has a causal effect on the dependent variable (the outcome being measured). For instance, in a study testing a new teaching method, the control group would be taught using the traditional method, while the experimental group would be taught using the new method. By comparing the performance (dependent variable) of the two groups, researchers can assess whether the new teaching method (independent variable) has an impact.