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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.
Twelve samples, each containing five parts, were taken from a process that produces steel rods. The length of each rod in the samples was determined. The results were tabulated and
Scheduling - Aggregate Planning Meaning and Definition Scheduling may be defined as the assignment of work to the facility with the specification of times ,and the sequence
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The growth rates of newly industrialized countries are burgeoning between 5 and 11% That is a little over two times the growth rates of developed countries. Why do you think tha
Rocky Mountain Tire Center sells 20,000 go-cart tires per year. The ordering cost for each order is $40, and the holding cost is 20% of the purchase price of the tires per year. Th
Can you show me step by step how to solve the following problem? Payments of $20,000 at 6% interest Compounding quarterly What will be the value in 12 years?
Suppose you are the manager of an accounts receivable unit in a large company. You are switching to a new system of billing and record-keeping and need to train your three supervis
Division X is growing and is in constant need of trained employees. The demand rate for trained employees is relatively constant at 5 each month. The division can run a gaining p
I recently rented a book and it turns out that I no longer need to be in the class that requires that book. The book just got here today and I have not opened the package at all. I
Using the data in Table 13-1, what is the latest possible time that C may be started without delaying completion of the project? Table 13-1 The following represents a project with
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