Consider the previous example, where a school set up an experiment in which 500 algebra 2 students were randomly assigned to take the course online or with lectures by a teacher. The same teacher was used for both courses, and both met for 58 minutes per day. At the end of the year, the success of each program was measured by students' scores on the algebra 2 final exam, which was the same for both courses a) Explain how this experiment used comparison
b) Explain the purpose of randomly assigning the students to the two treatments.
c) Name two variable that was controlled in this experiment and why it was beneficial to control these variables.
d) Explain how this experiment used replication. What is the purpose of replication in this context?