Problem 13.5 The data below come from a comparison study of the execution times (mea[1]sured in milliseconds) of five different work loads on three different configurations of a pro[1]cessor. The goal was to study the effect of processor configuration on computer performance.

(a) Identify the experimental units, the response variable, and the two factors.

(b) Calculate the ANOVA table and test whether there are differences among the three con[1]figurations. Use α = 0.05.

(c) Which treatment means are significantly different from one another? Use Tukey’s mul[1]tiple comparison method with α = 0.05.

(d) Check the model assumptions by graphing suitable plots of the residuals. Configurations Workload Two Cache One Cache No Cache ASM 54.0 55.0 106.0 TECO 60.0 60.0 123.0 SIEVE 43.0 43.0 120.0 DRHYSTONE 49.0 52.0 111.0 SORT 49.0 50.0 108.0