Question

Which of the following estimates at a 95% confidence level most likely comes from a small sample?

A. 48% (±5%)
B. 53% (±3%)
C. 67% (±7%)
D. 59% (±21%)

Answer 1

The smaller the sample, all else being equal, the wider or larger the confidence interval will be.

Answer 2

i still don't understand how i will get the answer...