In a public opinion poll, a polling company used an online survey tool to randomly contact respondents who did not have telephon
e lines in addition to contacting people over the phone. Which of the following best explains this decision? answer choices
The company saved money because it did not need to hire as many telephone interviewers to conduct the poll.
The company was establishing a benchmark poll at the beginning of a campaign.
The company was interested in asking different questions to different individuals.
The company wanted to ensure that the sample of the population was truly random
Answer: The company wanted to ensure that the sample of the population was truly random.
Explanation: In other to obtain a sample which is truly representative of the larger population, then every member of the population must have the same probability of being included in the sample distribution. If the company had only included those with telephone lines alone, that would have meant that a sizeable number of the entire population were left out intentionally and not due to random selection. However, with the use of an online survey tool, that means members without telephone also have a random chance of being part of the sampling distribution. Hence, making the sampling distribution a good representative of the larger population.
