Question: Consider the experiment in Exercise 8 4 Plot the residuals against
Consider the experiment in Exercise 8.4. Plot the residuals against the levels of factors A, B, C, and D. Also construct a normal probability plot of the residuals. Comment on these plots.
Answer to relevant QuestionsFind the standard error of the effects for the experiment in Exercise 8.4. Using the standard errors as a guide, what factors appear significant? In exercise A component has a Weibull time-to-failure distribution. The value of the scale parameter is Calculate the reliability at 250 hours for the following values of the shape parameter: . For the fixed value of the scale ...Consider the following 10 observations on time to failure: 50, 191, 63, 174, 71, 62, 119, 89, 123, and 175. Is either the exponential or the Weibull a reasonable choice of the time to failure distribution? A series system has four independent identical components. The reliability for each component is exponentially distributed. If the reliability of the system at 8,000 hours must be at least 0.999, what MTTF must be specified ...Suppose that units are placed on test and that five of them fail at 20, 25, 40, 75, and 100 hours, respectively. The test is terminated at 100 hours without replacing any of the failed units. Find the failure rate.
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