Question: Agency for New Americans Denise Walker collapsed at home after her first outing as a volunteer for the Agency for New Americans in Raleigh, North Carolina. Denise had a fairly good career going with various federal agencies after graduating with a degree in accounting. She decided to stay at home after she and her husband started a family. Now that their youngest was in high school, Denise decided she needed something more to do than manage the household. She decided on volunteer work and joined the Agency for New Americans. The purpose of the Agency for New Americans is to help new arrivals become comfortable with the basic activities necessary to function in American society. One of the major activities, of course, is shopping for food and other necessities. Denise had just returned from her first outing to a supermarket with a recently arrived Somali Bantu family. It was their first time also, and they were astonished by both the variety and selection. Since the family was on a very limited budget, Denise spent much time talking about comparison shopping, and for someone working with a new currency, this was hard.
She didn't even want to tell them the store they were in was only one of four possible chains within a mile of their apartment. Denise realized the store she started with would be the one they would automatically return to when on their own. Next week, Denise and the family were scheduled to go to a discount store. Denise typically goes to a national chain close to her house but hasn't felt the need to be primarily a value shopper for some time. Since she feels the Somali family will automatically return to the store she picks, and she has her choice of two national chains and one regional chain, she decides to not automatically take them to "her" store. Because each store advertises low prices and meeting all competitors' prices, she also doesn't want to base her decision on what she hears on commercials. Instead, she picks a random selection of items and finds the prices in each store. The items and prices are shown in the file New Americans. In looking at the data, Denise sees there are differences in some prices but wonders if there is any way to determine which store to take the family to.
Required Tasks: 1. Identify the major issue in the case.
2. Identify the appropriate statistical test that could be conducted to address the case's major issue.
3. Explain why you selected the test you choose in (2).
4. State the appropriate null and alternative hypotheses for the statistical test you identified.
5. Perform the statistical test(s). Be sure to state your conclusion(s).
6. If possible, identify the stores that Denise should recommend to the family.
7. Summarize your analysis and findings in a short report.