Question

what does the margin of error in the confidence interval cover? choose the correct answer.
a. nonresponse error
b. response error
c. random sampling error
d. error from under coverage

Explanation:

The margin of error in a confidence interval specifically accounts for the variability due to the random sampling process. Non - response error (a) is about people not responding to a survey, response error (b) is about inaccuracies in responses, and under - coverage error (d) is about parts of the population not being included in the sampling frame. These are non - sampling errors. The margin of error only covers random sampling error.

Answer:

C. random sampling error