4-The results of the SPEC CPU2006 bzip2 benchmark running on an AMD Bar- celona has an instruction count of 2.389E12, an execution time of 600 s, and a reference time of 900 s. a. Find the CPI if the clock cycle time is 150 ns. b. Find the SPECratio. c. Find the increase in CPU time if the number of instructions of the benchmark is decreased by 4% without affecting the CPI. d. Find the increase in CPU time if the number of instructions of the benchmark is decreased by 4% and the CPI is decreased by 4%. e. Find the change in the SPECratio for this change.

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