A researcher quadruples the sample size while keeping s and confidence level the same.
What happens to the margin of error?
- Acheck_circle
It is halved.
- B
It stays the same.
- C
It is quartered.
- D
It doubles.
Explanation
ME is proportional to 1/sqrt(n). Multiplying n by 4 divides ME by sqrt(4) = 2.