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If a process variable is normally distributed, in the long run virtually all observed values should be between
a. With LSL and USL denoting the lower and upper specification limits, one commonly used process capability index is
Cp = 1 indicates a process that is only marginally capable of meeting specifications. Ideally, Cp should exceed 1.33 (a "very good" process). Calculate the value of Cp for each of the cork production processes described in the previous exercise, and comment. b. The Cp index described in (a) does not take into account process location. A capability measure that does involve the process mean is
Calculate the value of Cpk for each of the corkproduction processes described in the previous exercise, and comment. c. How do Cp and Cpk compare, and when are they equal?
Randomized Controlled Trail of a New Drug for Pain Management
Describe appropriate treatment means μ1, μ2 and μ3. After that Test for statistically significant differences between these treatment means. Set α = 0.05.
A directed line segment in the plane can be represented as a pair of vectors -- the vector running from the origin to the start-point of the segment, and the vector running from the origin to the end-point of the segment. Use your vector represent..
Examine the residual files and produce appropriate residual plots to examine the assumptions. Are the Level-1 residuals normally distributed? Are the level-2 residuals multivariate normal? How do you know?
a random sample of forty-three 200 meter swims has a mean time of 3.27 minutes and a standard deviation of 0.07
Use an alpha level of .01 and test the hypothesis that the two methods are producing the same mean.
you preform an anova on eighteen subjects divided evenly into three groups according to age. reading speed is measured
Compute a 95% confidence interval for the difference between the recall proportions for the two populations.
For a simple random sample of 36 recent customers, invoke the central limit theorem and determine the probability that their average waiting time was at least 4.0 minutes.
Which of these following statements provides the best guidance for the model building?
Need a behavioral research situation that could use a Pearson coefficient research study and a chi square research study; also understanding the rational of each one.
although delays at major airports are now less frequent ithelps to know which airports are likely to throw off your
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