Case 2: Sampling design For the situations below, what would be the relevant population and the most appropriate sampling design? Make sure you discuss the reasons for your answers. 1. The medical inspector desires to estimate the overall average monthly occupancy rates of the cancer wards in 80 different hospitals which are evenly located in the Northwestern, Southeaster, Central and Southem suburbs of New York City. 2. A magazine article suggested that "Consumers aged 35 to 44 will soon be the nation's biggest spenders, so advertisers must learn how to appeal to this "over-the-thrill crowd". If this suggestion appeals to an apparel manufacturer what should be the sampling design to assess the tastes of this group? 3. The McArthur Co. produces special vacuum cleaners for conveniently cleaning the inside of cars. About a thousand of these are produced every month with stamped serial numbers and stored serially in a stock room Once a month, an inspector does a quality control check on fifty of these When he certifies them as to quality, the units are released from the stock room for sale. The production and sales managers, however, are not satisfied with the quality control check, since quite often, many of the units sold are returned by customers because of various types of defects. What would be the most useful sampling plan to test the fifty units? 4. A consultant had administered a questionnaire to some 285 employees using a simple random sampling procedure. As she looked at the responses she suspected that two questions might not have been clear to the respondents. She would like to know if her suspicion is well founded 5. The Executive board of a relatively small university located in Europe wants to determine the attitude of their students toward various aspects of the university. The university, founded in 1928, is a fully accredited government financed university with 11,000 students. The university specializes in the social sciences and humanities and has 5 faculties, 6 service departments, 8 research centers, and 2 graduate schools. The Executive board has asked you to come up with a sampling plan. Develop a sampling plan and pay attention to the following aspects target population the sampling frame, the sample technique and the sample size 6. T-Mobile is a mobile network operator headquartered in Bonn, Germany The company has enlisted your help as a consultant to develop and test a model on the determinants of subscriber chur in the German mobile telephone market. Develop a sampling plan and pay specific attention to the following aspects. Define the target population. Discuss, in as much detail as possible, the sampling frame and the sampling design that you would use. Give reasons for your choice