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1. Explain the concept of process capability and when it should be estimated. What is its impact on nonconformance? Discuss in the context of project completion time of the construction of an office building.
2. What are the advantages and disadvantages of cumulative sum charts compared to Shewhart control charts?
A number of years ago, there was a popular television game show called Let's Make a Deal. The host Monty Hall, would randomly select contestants from the audience and, as the title suggests
the verbal part of the graduate record exam has a mean ? of 500 and a standard deviation ? of 100. use the normal
Begin by deciding whether to use a one-tailed or a two-tailed test. Calculate a t test and interpret your results. Be sure to carry several decimal places in your work on this problem.
The inventory value is estimated by the sum of book values of population and N-D, where N is population size at top ,D at bottom. show that the estimate is unbiased. Find an expression for the variance of the estimate.
Determine a 95% confidence interval for proportion of all voters in favour of candidate.
Operators are to answer telephone calls from customers in an average time of 0.1 minute or less, and either respond to or refer to the proper department within 0.5 minute.
This exercise is a "what if analysis" designed to determine what happens to the test statistics and interval estimates when elements of the statistical inference change.
If out of a random sample of college students expressed an intent to vote, can the aide's estimate be rejected at the level of significance? Perform a one-tailed test.
How to do multiple regression using Excel and the Megastat plugin. Students are given step-by-step instructions on how to use the MegaStat plugin for Excel and told why Excel's Data Analysis Toolpak isn't reliable for rigorous statistical analysis..
Laura wanted to build a multiple regression model based on advertising expenditures and coffee times price index. Based on the selection of all normal values she obtained the following:
I am to compute expected values, test stat, use p-value approach and determine critical value with alph at .05
Although there is a popular belief that herbal remedies such as ginkgo biloba and ginseng may improve learning and memory in healthy adults, these effects are usually not supported by well-controlled research.
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