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Identify the type of sampling used. In an effort to identify if an advertising campaign has been effective, a marketing firm conducts a nationwide poll by randomly selecting individuals from a list of known users of the product.

Short Answer

Expert verified
Simple Random Sampling

Step by step solution

01

Understand the Context

The problem is about a marketing firm that wants to identify if an advertising campaign has been effective. To do this, they conduct a poll.
02

Identify the Population

The population in this case is the known users of the product across the nation.
03

Recognize the Sampling Method

Since individuals are being randomly selected from a list of known users of the product, this is an example of Simple Random Sampling.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Simple Random Sampling
Simple random sampling is a basic yet powerful sampling method. It ensures every member of the population has an equal chance of being selected. This is important for achieving unbiased results.

To conduct simple random sampling, follow these steps:
  • List all members of the population.
  • Use a random method, like a computer program or random number table, to select individuals from this list.
In the given exercise, the marketing firm chooses individuals randomly from a list of known users. This approach avoids biases and helps in obtaining a representative sample of the entire group of users.
Population Identification
Identifying the correct population is crucial in any survey or study. The population is the entire group you are interested in studying.

Here are some points to consider when identifying a population:
  • Make sure the population fits the scope of your study.
  • Define clear criteria for who is included in your population.
In the exercise, the population is the known users of the product being advertised. This group is crucial because the goal is to assess the advertising campaign's effectiveness. By correctly identifying this population, the marketing firm ensures their findings are relevant and valuable.
Advertising Effectiveness
Measuring advertising effectiveness is key to understanding the success of a campaign. It helps in determining the return on investment and guiding future advertising strategies.

To assess advertising effectiveness, consider these approaches:
  • Conduct surveys and polls, like in the exercise.
  • Analyze sales data before and after the campaign.
  • Use online metrics, such as click-through rates and social media engagement.
In the exercise, the marketing firm uses a nationwide poll to gather feedback from product users. This method provides direct insights from the target audience, helping the firm understand the campaign's impact on awareness and behavior.

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Most popular questions from this chapter

Read the following article from the January 20 2005 USA Today. What types of nonsampling errors led to incorrect exit polls? FIRMS REPORT FLAWS THAT THREW OFF EXIT POLLS Kerry backers' willingness, pollsters' inexperience cited By Mark Memmott, USA Today The exit polls of voters on Election Day so overstated Sen. John Kerry's support that, going back to 1988 they rank as the most inaccurate in a presidential election, the firms that did the work concede. One reason the surveys were skewed, they say, was because Kerry's supporters were more willing to participate than Bush's. Also, the people they hired to quiz voters were on average too young and too inexperienced and needed more training. The exit polls, which are supposed to help the TV networks shape their coverage on election night, were sharply criticized. Leaks of preliminary data showed up on the Internet in the early afternoon of Election Day, fueling talk that Kerry was beating President Bush. After the election, some political scientists, pollsters and journalists questioned their value. In a report to the six media companies that paid them to conduct the voter surveys, pollsters Warren Mitofsky and Joseph Lenski, said Wednesday that "on average, the results from each precinct overstated the Kerry-Bush difference by 6.5 (percentage) points. This is the largest (overstatement) we have observed \(\ldots\). in the last five presidential elections." Lenski said Wednesday that issuing the report was like "hanging out your dirty underwear. You hope it's cleaner than people expected." Among the findings: \(\cdot\) They hired too many relatively young adults to conduct the interviews. Half of the 1,400 interviewers were younger than \(35 .\) That may explain in part why Kerry voters were more inclined to participate, since he drew more of the youth vote than did Bush. But Mitofsky and Lenski also found younger interviewers were more likely to make mistakes. \(\cdot\)Early results were skewed by a "programming error" that led to including too many female voters. Kerry outpolled Bush among women. \(\cdot\) Some local officials prevented interviewers from getting close to voters. For future exit polls, Lenski and Mitofsky recommended hiring more experienced polltakers and giving them better training, and working with election officials to ensure access to polling places. Lenski and Mitofsky noted that none of the media outlets they worked for \(-\mathrm{ABC},\) CBS, CNN, Fox News, NBC and the Associated Press-made any wrong "calls" on election night. Representatives of those six are reviewing the report. Many other news media, including USA Today, also paid to get some of the data.

Contrast the differences between qualitative and quantitative variables.

Offering rewards or incentives is one way of attempting to increase response rates. Discuss a possible disadvantage of such a practice.

Determine whether the study depicts an observational study or an experiment. A poll is conducted in which 500 people are asked whom they plan to vote for in the upcoming election.

Identify the type of sampling used. A statistics instructor with a large number of students attempts to reduce time spent grading by only grading a portion of assigned homework problems. He randomly selects one of the first four problems in the assignment and then grades that problem and every fourth problem thereafter.

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