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An experiment was run in a semiconductor fabrication plant in an effort to increase yield. Five factors, each at two levels, were studied. The factors (and levels) were A = aperture setting (small, large), B = exposure time (20% below nominal, 20% above nominal), C = development time (30 and 45 seconds), D = mask dimension (small, large), and E = etch time (14.5 and 15.5 minutes). The following un-replicated 25design was run:
Suppose that a center point had been run (replicated five times) and the responses were 45, 40, 41, 47, and 43.
(a) Estimate the experimental error using the center points. Compare this to the estimate obtained originally by pooling apparently non significant effects.
(b) Test for look of fit, using α = 0.05.
among the 15 scientists working on a research project 10 have ph.d.s. if four of these scientists are chosen at random
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The maximum allowable payback and discounted payback statistic for the project are 2 and 2.5 years, respectively. Use the NPV decision rule to evaluate this project; should it be accepted or rejected?
consider a population having a standard deviation equal to 9.90. we wish to estimate the mean of this population.a.how
For each of the two factors (age at first live birth and age at meno- pause), calculate the generalized odds and give your interpretation. How does this result compare with those in part (a)?
fifty percent of households say that they would feel secure if they had 50000 in savings. you randomly select 8
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At the .05 level of significance, can we conclude that those joining Weight Reducers on average will lose less than 10 pounds? Determine the p-value.
provide an example of each of the following types of data nominal ordinal interval and
the diameters of peaches in a certain orchard are normally distributed with a mean of 4.14 inches and a standard
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