Discussion Board
Topic:
Discussion Board
Paper details:
Please answer the following questions. Make sure to cite if you use any other sources. Grammar and spelling errors make comments distracting.
1. Researchers often are particularly interested in the subset of a market that contributes most to sales (for example, heavy beer drinkers or large-volume retailers). What type of sampling might be best to use with such a subset? Why?
2. A manufacturer of MP3 players surveyed one hundred retail stores in each of the firm’s sales regions. An analyst noticed that in the South Atlantic region the average retial price was $165 (mean) and the standard deviation was $30. However, in the Mid-Atlantic region the mean price was $170, with a standard deviation of $15. What do these statistics tell us about these two sales regions?
1. Researchers often are particularly interested in the subset of a market that contributes most to sales (for example, heavy beer drinkers or large-volume retailers). What type of sampling might be best to use with such a subset? Why?
2. A manufacturer of MP3 players surveyed one hundred retail stores in each of the firm’s sales regions. An analyst noticed that in the South Atlantic region the average retial price was $165 (mean) and the standard deviation was $30. However, in the Mid-Atlantic region the mean price was $170, with a standard deviation of $15. What do these statistics tell us about these two sales regions?
For question #3 please see the attachment. It will help you to answer the question.
3. The simple survey method described in the case may have been sufficient as a way to draw
attention to the issue of data security. However, if the company were using data on lost mobile
devices to predict demand for a product, accuracy might be more significant. Imagine that you
have been asked to collect data on mobile devices left in cabs, and you wish to be able to report
results with a 95 percent confidence level. How can you improve the sample design and select an
appropriate sample size?
