Problem $4$

A $32$ 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.