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A major DVD-of-the-month club collected data on the reasons for returned shipments during a quarter. Results are: Wrong Selection, 50,000; Refused, 195,000; Wrong Address, 68,000; Order Canceled, 5000; and Other, 15,000. Construct a Pareto diagram.
This problem related to Basic Statistics and it discuss about the different methods in sampling. Two sampling methods to research in the IT field have been given in the solution
If you buy a box of Wisk, the probability of getting a scoop is 97%. If you buy 9 boxes over the next several months, what is the probability of missing two scoops?
A random sample obtained from a population has a mean of µ=100 and a standard deviation of σ = 20. The error between the sample mean and the population mean for a sample of n = 16 is 5 points and the error between a sample men and population mean ..
you are dealt a hand of three cards one at a time. find the probability your cards are all red all diamonds or
What sample size would be needed for an error of ± 1.5 with 98 percent confidence? (Data are from a project by MBA student Wendy Blomquist.)
Fit both linear and an exponential trend to the data. (d) Which model is preferred? Why? (e) Make a forecast for 2003, using a trend model of your choice (or judgments forecast).
Which of the following events are disjoint and What proportion of the females rated their intelligence less than 7.
Let the random variable X represent the number of light bulbs selected that function properly (i.e., that are not defective). Define the appropriate probability density function for X. What is the probability space for the experiment?
Why is a normal distribution curve a good way to display data? What are the two main properties that describe the curve and what can you tell by just those two numbers. Give an example of a real world situation where you could use a normal curve t..
Correlation and Regression
Determine a random number generator and make simulated data for not more than 25 participants (test subjects) in study using ranges of values for variables you established above.
a. Design a UMPU level-a test of the null hypothesis Ho : µ, E [2, 4] versus Ha : µ, ¢ [2, 4]. You can base your test on the asymptotic normal distribution of the test statistic. b. Test the null hypothesis using a size .OS UMPU test. Does the..
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