1. It is the subset of a group - Group sample.
2. It equally favors all members of a group sample
- Random sample.
3. It collects data on members of a group - Survey.
4. It does not equally favor all members of a group - Biased sample.
5. It includes all members of a group
- Population.
6. It analyzes data collected from a group - Mean.
I have matched all concepts in accordance with statistical use, hope it helps.
Answer:b
Step-by-step explanation:
2sin3x-1=0
sin3x=1/2
sinx=1/2, x=pi/6, 5pi/6
3x=arcsin(1/2)
x=1/3*pi/6
[x=pi/18]
