4. (10 points) We have a single stage, non-pipelined machine and a pipelined machine with 5 pipeline stages. The cycle time of the former is 5ns and the latter is 1ns. a. Assuming no stalls, what is the speedup of the pipelined machine over the single stage machine? 5. (10 Points) Suppose the instructions executed by the processor are broken down as follow: What is the average CPI