Question: An information systems manager wishes to compare the execution speed (in seconds) for a standard statistical software package using three different compilers. The manager tests

An information systems manager wishes to compare the execution speed (in seconds) for a standard statistical software package using three different compilers. The manager tests each compiler using three different computer models, and the data in Table 11.20 are obtained. Completely analyze the data (using a computer package if you wish). In particular, test for compiler effects and computer model effects, and also perform pairwise comparisons.
TABLE 11.20
Results of an Execution Speed Experiment for Three Compilers (Seconds)

Compiler 2 Computer Model 235 Model 335 Model 435 9.9 12.5 10.8 8.0 10.6 9.0 7.1 9.1 7.8

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