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I am new to dsp, and I'd really appricate it if someone please help me with this problem. I guess it's a basic simple question, but I cannot get it write. Here is the question:
The variance of a random signal generated using MATLAB command randn is approximately 1. We need a random signal with variance 0.01. With which factor you need to scale the signal?
With amplitude? Like we need to multiple the amplitude of the signal by 0.1?