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Problem 4 A 3x2 factorial experiment was designed to study the effect of three alcohols and two bases on the percent yield for a particular chemical process. The process was run four times with each alcohol/base combination. The results are given the alcohol_base.txt file. Read in the txt file (Hint: use something similar to read.csv). Generate a boxplot. Export the boxplot as a .tiff file. Check for interaction. Explain it if significant. Generate the 4 diagnostic plots and try to explain your results.