An online article about an opinion poll says that "41% of Americans own a gun." The poll is based on online survey interviews with 2,700 adults chosen randomly from a numbered list of 750,000 responses from around the United States, excluding New England states.
Part A: What is the population and sample in this poll? (3 points)

Part B: What type of sampling is used? (3 points)

Part C: Are there any sources of bias present? Explain. (4 points)