Question

please answer all the questions

Due: 10-Apr, 2018 All questions carry equal weightage 1. The cutting of sall, square, metal plates (used to make square nuts) is done using a shearing process. The variables in the process include shearing pressure, shearing blade width, and the temperature of the metal to be cut. The response is the crispness of the cut, rated on a scale of 1 to 10. The measured (reported) crispness is an average crispness of 10 sheared plates. A process engineer decided to study the system to find the settings of the variables that would maximize crispness The data are listed in the Table below Data to Study Effect of System Settings on Shearing of Metal Plates Run Pressure Width Temperature Crispness -400 +.. 1.0" +-500 °F 3.2 8.1 3.8 8.9 3.9 10 8.0 9.4 14 12 15 9.1 4.6 9.1 3.6 16 13 8.4 9.9 (a) Plot the response versus run and comment on what you see b) Calculate the mean and variance of the replicate responses for each run, and calculate the pooled standard deviation (c Make a plot of cell standard deviations versus cell means to see if the equal variance assumption is d)Cakculate the main effects, two-way interaction effects, and the three-way inter- action effects. Calculate the standard error of an effect, sr, and determine which effects and interactions are significant at the 95% confidence level. (f) Graph any significant interactions and write a sentence or two interpreting each significant effect or g) What conditions would maximize crispoess?

ME senior lab

Answer 1

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