Quiz 1

# Quiz 1 - University of Arkansas at little Rock Department...

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University of Arkansas at little Rock Department of Systems Engineering SYEN 3314 Probability and Random Signals Summer 2009 Quiz 1 Wednesday, June 3, 2009 This is a closed book Quiz. Calculators are not allowed. The quiz has 3 questions to be answered in 15 mn Please be neat, we cannot grade what we cannot decipher. Name 1

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Question 1 Monitor three consecutive phone calls going through a telephone switching oﬃce. Classify each one as a voice call ( v ) if someone is speaking, or a data call ( d ) if the call is carrying a modem or fax signal. Your observation is a sequence of three letters (each letter is either v or d ). For example, two voice calls followed by one data call corresponds to vvd . Write the following sets: 1. A 1 = { ﬁrst call is a voice call } 2. A 2 = { second call is a voice call } 3. A 3 = { all calls are the same } 4. A 4 = { one or more voice calls } 5. B 1 = { ﬁrst call is a data call } 6. B 2 = { second call is a data call } 7. B 3 = { voice and data alternate
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Quiz 1 - University of Arkansas at little Rock Department...

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