In a recent study of enterprise resource planning (ERP) system effectiveness, researchers asked companies about how they assessed the success of their ERP systems. Out of 335 manufacturing companies surveyed, they found that 201 used return on investment (ROI), 100 used reductions in inventory levels, 28 used improved data quality, and 6 used on-time delivery. In a survey of 200 service firms, 40 used ROI, 40 used inventory levels, 100 used improved data quality, and 20 used on-time delivery. Is there evidence that the measures used to assess ERP system effectiveness differ between service and manufacturing firms? Perform the appropriate test and state your conclusion.
Answer to relevant QuestionsThe U.S. Bureau of Economic Analysis provides information on the Gross Domestic Product (GDP) in the United States by state (www.bea.gov). The Bureau recently released figures that showed the real GDP by state for 2007. ...A market researcher working for the bank in Exercise wants to know if the distribution of applications by card is the same for the past three mailings. She takes a random sample of 200 from each mailing and counts the number ...Look back at the prices for the external disk drives we saw in Exercise 10. The least squares line is Price = 15.112 + 62.417 Capacity. The assumptions and conditions for regression are met. SE(b1) = 11.328 a) Disk drives ...In an investigation of environmental causes of disease, data were collected on the annual mortality rate (deaths per 100,000) for males in 61 large towns in England and Wales. In addition, the water hardness was recorded as ...For the regression of Exercise 1, find the standard error of the regression slope. Show all three values that go into the calculation. In Exercise Age .... Rentals 35 .... 9 40 .... 8 50 .... 4 65 .... 3 40 .... ...
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