Discover a wealth of knowledge and get your questions answered on IDNLearn.com. Get the information you need quickly and accurately with our reliable and thorough Q&A platform.

Suppose a researcher is conducting a public-opinion poll for a politician during an election. The politician cares about getting an accurate response but isn't inclined to pay more than she needs to so long as the margin of error is less than 4%. How big of a sample size should the researcher aim to get