Spring11_MidTerm_Question_Sheet

# Spring11_MidTerm_Question_Sheet - The Hong Kong University...

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The Hong Kong University of Science and Technology Department of Electronic and Computer Engineering ELEC 210: Probability and Random Processes in Electrical Engineering 2011 Spring Semester Midterm Test March 23, 2011 N a m e : Student ID: Instructions: 1. This is an 80-minute test. 2. You may use a non-programmable calculator. 3. There are 2 sections : a. Section 1: 5 Multiple Choice Questions b. Section II: 4 Problems 4. Try to attempt all questions. 5. Answer each question in your answer booklet . 6. The distribution of marks is shown in the table below: Question Mark Multi. Choice 20 1 20 2 20 3 20 4 20 Total 100

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SECTION I: Multiple Choice [20 Marks] Notes: For each multiple-choice question below, select only ONE answer. Write your answer in your ANSWER BOOKLET (not this question sheet) 1. [4’] Which of the following statements is true? a) Probability mass function (pmf) can be used for both discrete and continuous random variables b) Cumulative distribution function (cdf) can be used for both discrete and continuous random variables c) Not all the moments of X can be calculated from the probability density function (pdf) d) The value of the probability density function (pdf) cannot be greater than 1 2. [4’] Which of the following statements about independence is true? a) For two events A and B, if P[B]=0, then A and B cannot be independent b) If A and B are independent, then A and B c are also independent c)
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## This note was uploaded on 10/16/2011 for the course ELEC 308,315,10 taught by Professor Prof.shenghuisong during the Spring '11 term at CUHK.

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Spring11_MidTerm_Question_Sheet - The Hong Kong University...

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