Question: A company that is selling database management optimization software contacts you to pitch its product. The representative claims that the memory management software will reduce

A company that is selling database management optimization software contacts you to pitch its product. The representative claims that the memory management software will reduce page fault rates for your system. She offers you a 30-day free trial of this software. Before you install it, however, you decide to first determine a baseline for your system. At specific times of the day, you sample and record the page fault rate of your system (using the system’s diagnostic software). You do the same after the software has been installed. How much of an average performance improvement has the new software provided?

The fault rates and times of day are shown in the table below.

Time 02:00-03:00 10:00-11:00 13:00-14:00 18:00-19:00 Fault Rate Before 35% 42% 12% 20% Fault Rate After 45%

Time 02:00-03:00 10:00-11:00 13:00-14:00 18:00-19:00 Fault Rate Before 35% 42% 12% 20% Fault Rate After 45% 38% 10% 22%

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