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Testing for population proportion -
The personnel director of a large insurance company is interested in reducing the turnover rate of data processing clerks in the first year of employment. Past records indicate that 25% of all new hires in this area are no longer employed at the end of one year. Extensive new training approaches are implemented for a sample of 150 new data processing clerks. At the end of a one-year period, 29 of these 150 individuals are no longer employed. At the .01 level of significance, is there evidence that the proportion of data processing clerks who have gone through the new training and are no longer employed is less than .25?
Relatively speaking, who performed better on the test, you, with an 86, or your friend? Why?
What is the OR of getting cancer fora late child birth woman compared to an early first birth woman?
If all samples of size 64 are drawn, mean of sample according to Central Limit Theorem is 100.
The Central Limit Theorem states that the sampling distribution of means is:
Set-up/solve the problem graphically. (How many ceiling fans and how many floor fans should be made?)
Using the .10 level of significance, can we conclude that the assembly time using the new method is faster?
Determine a 95% confidence interval for the population mean.
What is the probability all three of the selected homes have a security system?
Based on this information, determinethe probability that specific fare will exceed $15.00?
Assuming that the Poisson distribution is a plausible model in describing variability of asbestos fiber counts in filters; derive a 95% confidence interval indicating the variability in the average number in asbestos fibers.
Prepare a mixed integer programming model for this problem.
The manager is concerned that sales are slipping, after taking into account the average value of sales for four consecutive Saturdays being $4800.
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