Define the standard error for the sampling distribution of proportions.

On a final exam a student was asked to define sampling error. He wrote:  "sampling error is roughly the average difference between a sample statistic and the population parameter".  Unfortunately, this is not the definition of sampling error, but it is the correct definiition of something else. What has the student defined?

In the textbook, a sampling distribution can be regarded as approximately normal when which conditions are met?

If a normal sampling distribution can be used, identify the rejection region(s). Select the correct choice below and, if necessary, fill in the answer box(es) to complete your choice.