Question

A school psychologist wants to test the effectiveness of a new method of teaching . She recruits ​-grade students and randomly divides them into two groups. Group 1 is taught by means of the new​ method, while group 2 is taught by traditional methods. The same teacher is assigned to teach both groups. At the end of the​ year, an achievement test​ (graded on a scale from​ 1-10) is administered and the results of the two groups are compared. Complete parts​ (a) through​ (i) below.

Answer 1

you didn't show us what were a and i

Explanation:

but if your looking for a controlled experiment and manipulated variable then the controlled experiment is the two groups and then the manipulated variable is the way the students learn

Answer 2

"is" (and any subsequent words) was ignored because we limit queries to 32 words.