Question

Seenario 3: In an attempt to understand the nation's opinion on universal healthcare, investigators sponsored an advertisement during an American mid-morming news radio that asked viewers the following question: "Should everyone have healthcare? Weigh in tonight from 4 to 6pm. If yes, call 1-900-720-6181. f no, call 1-900-720-6182. Charge is 50 cents for the first minute. Consider the population that the investigators are trying to sample, do they obtain a representative sample from this sampling scheme? Specifically, what type of sampling scheme has been used? What of sampling bias(s) may have occur? What else could be a source of issue when it comes to this type scenario?

Answer 1