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1. The average lateness for one of the top airline companies is 10 minutes. The Standard Deviation of the lateness measure is calculated as 3. An airplane arrived 8.5 minutes after the stated arrival time. Calculate the Z-score of the airplanes lateness
2. Health insurers and the federal govt are both putting pressure on the hospitals to shorten average length of stay of their patients. A random sample of 20 hospitals in one state had a mean length of stay for non heart patients in 2000 of 3.8 days and a SD of 1.2 days. Calculate a 95% confidence interval for the population mean LOS for non heart patients in the states hospitals.
3. At a local manufacturing plant employees must complete new machine set ups within 30 minutes. New machine set up times can be described by a normal model with a mean of 22 minutes and a SD of four minutes. What percent of new machine set ups take more than 30 minutes?
4.A random sample of 100 European professional soccer players has an average age of 27 years and a SD of 4 years. We would like to decide if there is enough evidence to establish that average age of European soccer players is significantly more than 26 years. What is the nul hypothesi?
5. What is the sample value of the test statistic?
6. At 0.01 level of significance, what decision would you make? Include proper reason.
Clearly-defined goals are the essence of great teamwork. Which of the following statements is most true about how goals should be articulated by teams: a. Goals should not be clear
application of operations research in managerial decision making
Comment on this " model building is the excess of operation research
Do results from the survey illustrate typical complaints about teams and specifically about team incentive rewards?
Broad Bands - How does this concept work today in a period of high unemployment, low pay increases, and a job market which favours the employer?
The Japanese firm Matsushita has a business philosophy from the strong founder Konosuke. This business philosophy was codified as the "Seven Spiritual Values" of Matsushita that al
Which of the following models uses a schematic model of the sequence of steps in a problem and the conditions and consequences of each step?
What problems associated with planned change should the OD practitioner be aware of? How might such problems be overcome?
The Central Valve Company sells industrial valves and fluid control devices. One of Central's most popular valves, the Western, has an annual demand of 6,000 units. The price of ea
In what sequence would the jobs be ranked according to the following decision rules
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