Question

in a scientific poll, what sample size is generally sufficient for accurately measuring national public opinion?

Explanation:

Identify standard scientific polling sample size

In American government and political science, a national scientific public opinion poll typically requires a random sample size of approximately 1,000 to 1,500 respondents to accurately measure national public opinion with a margin of error of about \(\pm 3\%\).

Determine the specific range or value

The standard textbook value for a sufficient national sample size is generally 1,000 (or 1,500). Given the numeric keypad interface, the expected answer is a standard integer value, which is 1000.

Answer:

In a scientific poll, what sample size is generally sufficient for accurately measuring national public opinion? <blank>1000</blank>