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respondents buying each brand in each period, based on a panel, are as follows: t0 Note: Confine your attention only to the data presented. Assume the world starts at t0 and stops after t1 and the strategies of brands X,Y, and Z are unchanged between t0 and t1. a) On the basis of these data, is the price change for brand W successful? Focus on market share as the relevant criterion. Show your calculations. ( 8 points) (Note: Market share is the percent of total sales in an industry that generated by a particular company) b) How many individuals in total switched brands between periods t0 and t1 ? Show vour calculations, ( 8 moints) Question 2. The short article in the appendix was posted on the CNET NEWS.COM web-site (a website with news about the PC and e-commerce industry). a) Identify the research problem facing Dell ( 8 points) - Note: research problem = research purpose b) Comment on the research approach/design taken by Dell. Do you see any shortcomings? To what extent does the approach address the research problem? Would you have taken the same or different approach to analyze the problem? A c) Which brand(s) other than W exhibited the highest loyalty rate? Show your calculations. ( 8 points) d) Which of the brands X,Y,Z should be most worried about W's promotion? Show your calculations. ( 8 points) (Note: worried about W's promotion meaning you're losing customers to W) A researcher wants to study the effect of a price change on the sales of various brands of a certain product. Assume the market is made up of four brands - W, X, Y and Z - and the price change (decrease) for brand W is introduced immediately after time t0. Assume every respondent buys exactly one unit of the product in each period. Data on number of respondents buying each brand in each period, based on a panel, are as follows

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