Question

question 5 of 10
suppose a population contains 20,000 people. all else being equal, a study based on a population sample that includes which of the following numbers of respondents would you have the most confidence in?

a. 2
b. 20
c. 200
d. 2000

Explanation:

Step1: Recall sampling principle

In sampling, larger sample size (with proper randomization, etc.) generally gives more accurate representation of population, increasing confidence in study results.

Step2: Compare sample sizes

Options: A (2), B (20), C (200), D (2000). 2000 is the largest sample here. Larger sample reduces sampling error, so a study with 2000 respondents (from 20,000 population) is more reliable.

Answer:

D. 2000