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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.
1 To ensure that its supply chain can handle a surge in demand, MitiTech should: a. hire additional manufacturing employees b. modify its design to speed up production time
The scope overview and business case sections of the project charter provide the high-level "what and why" of the project
Analyze the steps involved in crafting a wining business plan and make at least one recommendation for improving the process. Explain your rationale for making the recommendation y
Medical studies have shown that 10 out of 100 adults have heart disease. When a person with heart disease is given an EKG test, a 0.9 probability exists that the test will be posit
In a state where contributory negligence applies, a motorist that is about 10% responsible for a collision with another motorist, who sues the other motorist for negligence, will l
What is Marketing Research? Why do successful firms conduct marketing research for their products/services? Discuss the six steps in the Marketing Research process and relate to an
Do you think the attitudes and bargaining behaviours of the participants in collective bargaining negotiations are more or less important in the final outcome than economic conditi
Can you help me with the swot analysis of united airlines?
The most important effect of card check recognition procedures on union representation elections would be to: A. Increase the likelihood of first contract settlement. B. Give
Twenty samples of subgroup size 3 (n=3) were collected for a variable measurement. Determine the upper control limit (UCL) for an R-chart if the mean of the sample ranges equals
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