Author Question: An education researcher randomly selects 25 of the nation's junior colleges and interviews all of ... (Read 87 times)

wenmo · **on:** Jul 25, 2018

An education researcher randomly selects 25 of the nation's junior colleges and interviews all of the professors at each school. What sampling technique was used?

A) convenience
B) simple random
C) stratified
D) systematic
E) cluster

Question 2

In a poll of 615 voters in a certain city, 70 said that they backed a bill which would limit growth and development in their city. The margin of error in the poll was reported as 4 percentage points (with a 95 degree of confidence).

Which statement is correct?
A) There is not enough information to determine whether the margin of error is consistent with the sample size
B) The reported margin of error is consistent with the sample size
C) The stated margin of error could be achieved with a smaller sample size
D) The sample size is too small to achieve the stated margin of error