Customers arrive at a video rental desk at the rate of one per minute (exponential interarrival times). Each server can handle 0.4 customers per minute (exponential service times). What is the minimum number of servers needed to achieve an average time in the system of less than three minutes?

We are drowning in information, while starving for wisdom. The world henceforth will be run by synthesizers, people able to put together the right information at the right time, think critically about it, and make important choices wisely. -E. O. WilsonWhat is the meaning of the sentence above?

I need to solve the following: "ii) Suppose a book has the ISBN number 0444x50090, where the digit represented by x has been lost in transmission. What is x?" I know that for encoding there's a formula one can use but I'm confused about how to use it with the x?

a) A computer has a clock rate of 2GHz. It takes a program 10s to complete on this computer. The number of clock cycles of the program is b) A program has 1x106 instructions. The computer's clock cycle time is 250x10-12 seconds and the CPI is 2.0. Therefore, the CPU time of the program is seconds. c) We use a certain compression program as a benchmark of a certain computer system. The program has 2x10° instructions. The system has a CPI of 0.85, and a clock cycle time of 0.4x109 seconds. When we run the program, it takes 100 seconds to complete on the computer system, whereas it takes 900 seconds to complete on a reference computer. From what you know about the SPEC benchmarks, the SPECratio is