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SOLVED: Components are attached to an electronic circuit card assembly by a wavesoldering process. The soldering process involves baking and preheating the circuit card and then passing it through a solder wave by conveyor. Defects arise during the process. The data is found in wavesolder. (a) Make boxplots of the number of defects for each of the predictors and comment on the relationships seen. (b) Compute the mean and variance within each group of three replicates. Plot the variance against t

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