Sampling, Central Limit Theorem, & Standard Error

SOLVED:What kind of error? Which of the following are sources of sampling error and which are sources of nonsampling error? Explain your answers. (a) The subject lies about past drug use. (b) A typing error is made in recording the data. (c) Data are gathered by asking people to mail in a coupon printed in a newspaper.

define the concept of sampling error and explain why this phenomenon creates a problem to be addressed by inferential statistics 69605