00:01
Hello everyone.
00:03
So it is given that there are 120 students and we have to divide these 120 students into 40 40 and 43 groups for treatment 1, 2 and 3 respectively.
00:31
Right.
00:33
So first we give each student a unique number from 1 to 120 right.
00:52
We assign each student with a unique number that we can call as a rule number that lies from 1 to 120.
01:01
By unique meaning there will be no reputation.
01:04
Now coming to part a, we have to divide these 120 students into three groups of 40 each for treatment 1, 2 and 3 respectively.
01:17
First, using slips of paper or paper.
01:27
Okay, this process will be a time -consuming one.
01:30
Let us see how we'll do that.
01:32
We will make 120 slips of paper and on each paper we will write one number from 1 to 120.
01:52
Right.
01:54
Now we pick randomly pick 40 slips one by one without replacement and this becomes our treatment one group.
02:26
Next, out of remaining slips, repeat to select next 40.
02:46
This will be our treatment 2 and remaining 40 are our treatment 3.
03:00
So basically what we have done? so basically we have taken 120 slips of paper and on each slip we write a number from 1 to 120.
03:10
Right? so there are 120 slips now.
03:13
Containing a unique number from 1 to 120...