ECE 353 MIDTERM EXAM-W07.doc

ECE 353 MIDTERM EXAM-W07.doc - ECE 353 MIDTERM EXAM WINTER...

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ECE 353 MIDTERM EXAM WINTER 2007 Instructions : Please make sure to justify your answers in order to receive any credit for your work. This is a closed-notes, closed-book exam and no electronic aids of any kind are permitted. Only an 8.5x11 crib sheet is allowed. 1. (25 pts.) Suppose 30 resistors, of which 7 have defects, are sold to the IEEE store at OSU. If the IEEE store manager inspects six of the resistors randomly, what is the probability that he/she finds at least one defective resistor? 2. (25 pts.) Consider the following circuit What is the probability density function (pdf) of the power P 0 delivered to the output 5Ω resistor where V 0 is measured, when the independent voltage source V is a normal random variable? 3. (25 pts.) The simplest error detection scheme used in data communications is parity checking.
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