In a recent study of enterprise resource planning? (ERP) system?effectiveness, researchers asked companies how they assessed thesuccess of their ERP systems. Out of 360 manufacturing companies?surveyed, they found that 201 used return on investment? (ROI), 110used reductions in inventory? levels,42 used improved data?quality, and 7 used? on-time delivery. In a survey of 860 service?firms,470 used? ROI,260 used inventory? levels,100 used improveddata? quality, and 30 used? on-time delivery. Is there evidencethat the measures used to assess ERP system effectiveness differbetween service and manufacturing? firms? Perform the appropriatetest and state your conclusion.
State the null and alternative hypothesis.
A. Determine the ?2 statistic. ?(Round to three decimal placesas? needed.)
B. What is the P-Value (Round answer to three decimal places asneeded)
What is the proper conclusion? at the significance level xequals=0.05.
