Need to manually solve all the problems but can use minitab or excel to check answers.

Need to manually solve all the problems but can use minitab or excel to check answers.

An article in Lubrication Engineering (December 1990) described the results of an experiment designed to investigate the effects of carbon material properties on the progression of blisters on carbon face seals. The carbon face seals are used extensively in equipment such as air turbine starters. Five different carbon materials were tested, and the surface roughness was measured. The data is attached

Apply the Tukey’s method to this experiment. Does carbon material type have an effect on mean surface roughness? Use α = 0.05.