In a sample of n=500, p̂=0.40. We want a 95% CI for p.
What is the margin of error?
- A
0.086
- B
0.196
- C
0.022
- Dcheck_circle
0.043
Explanation
SE = sqrt(0.4·0.6/500) ≈ 0.0219. ME = 1.96·0.0219 ≈ 0.043.
Constructing a Confidence Interval for a Population Proportion
AP Statistics· difficulty 2/5
Want 10 more like this — adaptive to your weak spots?