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ece 380 - Final Exam - F08

# ece 380 - Final Exam - F08 - ECE 3800 Fall 2008 Severance...

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ECE 3800 Fall 2008 Severance Final Examination 1. [35 points] Consider a signal , where the random variables are all statistically independent with A is uniformly distributed on and uniformly distributed on . a. Find the autocorrelation . b. Find the spectral density . c. Sketch a graph of . d. Find the DC average power. e. Find the total average power. 2. [40 points] Consider a random variable defined by the following density function: a. Write an explicit mathematical description for the density function. b. Derive a formula for the distribution function c. Calculate the following probabilities: i. ii. d. Find the mean e. Find the second moment

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3. [20 points] An ECE 2100 lab experiment is performed by each of the 8 student groups in the lab section. The results of the critical voltage measurement are tabulated as follows: 15.5, 16.8, 14.2, 15.1, 13.8, 15.7, 16.2, 15.5 Assuming that these measurements are typical for this experiment, your job is to estimate the voltage that should be expected for the entire class (which consists of many lab
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ece 380 - Final Exam - F08 - ECE 3800 Fall 2008 Severance...

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