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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.
Goldratt - Theory of Constraints 1 identify the systems constraints 2 exploit the systems constraints 3 subordinate everything else to the above decision 4 elevate
What responsibility does GM have towards its employees? Does GM have the same responsibility to the employees of its suppliers?
Which type of research design - exploratory, descriptive, or casual - is appropriate for the following examples? Explain why? Cosmopolitan magazine sends out a cover in selected ma
Harley Davidson sells motorcycle X and Y. Motorcycle X sells for $10,000, has variable cost (labour and material) of $2,000, and requires 10 hours of use of machinery to produce. M
One of the most important issues discussed in the collective bargaining process is seniority. It is one of those components of the workplace that seems to impact every worker, whet
The number of visitors at a theme park by season and year has been recorded and is given in the following table: Quarter 2003 2004 2005 2006 Winter 45 46 35 16 Spr
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You are the Stores Manager at the Ministry of Information and you have the responsibility of managing store room No. 101 where all blank papers for this Ministry are kept. The ann
Provide two examples of current leaders and describe how they demonstrate their leadership characteristics. What separates these characteristics from management techniques? How eff
A company is considering whether to replace a machine. The old machine costs $90,000 and is being depreciated at 10% per annum using the straight line method. It is written down va
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