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1. What are the implications of statistical variation? Why are we interested in understanding and measuring variation?
Besides using variation in the world of quality, there are also social implications. For example, what does statistical variation suggest about how we ought to judge and treat ourselves and others? Cite an example of these implications from your own experience.
2. Linear Regression is a useful method if you want to be able to predict one variable based on knowledge of another. Discuss other prediction methods that might be useful. Also, discuss some of the more advance Regression methods. When would these methods be appropriate? Provide examples of each method.
Develop a 99% confidence interval for the population proportion.
The mean diastolic blood pressure for random sample of 90 people was 92 millimeters of mercury. If the standard deviation of individual blood pressure readings is known to be 12 millimeters of mercury
Using the .05 level of significance, what should we conclude about the theory that 24 hours is the natural cycle? (That is, does the average cycle length under these conditions differ significantly from 24 hours?)
If we have 2 groups with 2 characteristics each, what would our critical value be with an alpha of .025?
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
Test the financial analyst's belief that the average rate charged by credit cards with monthly fees is less than 14%. Use a 5% significance level.
An airline estimates that 90% of people booked on their flights actually show up. If the airline books 71 peopleon a flight for which the maximum number is 69, what is the probability that the number of people who show up will exceed the capacity ..
Ace Jack had no idea whether the $100,000 he pays for training for his used car salespeople works.
Find out optimal decision
Critically discuss some concepts behind variance analysis? Why is it important to test for variances in your data? Explain. How is variance analysis used in health care administration?
Compute the coefficient of determination for bone loss and women's age and describe what this statistic means.
The average monthly cost per household for groceries in kentucky is $625/mo with a standard deviation of $125/mo. The average age of the memebers in each of the households in Kentucky is 22.5 yr with a standard deviation of 5.175 yr. Which data se..
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