Lab Quizzes 2-6

Lab Quizzes 2-6 - Lab Quizzes 26: All Questions and Answers...

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Unformatted text preview: Lab Quizzes 26: All Questions and Answers Who is responsible for designing and implementing the solution to the technical problem on a project? Recorder Spokesperson Timekeeper Facilitator Everyone Where should the spokesperson from your group submit the team resume and project reports? Your lab section's Digital Dropbox in Blackboard The main site's Digital Dropbox in Blackboard To an undisclosed location in Area 51 The Matlab command that plays back a .wav audio file is: hearmysong wavplay wavread play If the value of an amplified signal attempts to exceed the amplifier supply voltage, then the result is a (fill in the blank) signal. chopped weird null clipped What are the two primary criteria that are critical to a good arrhythmia detection algorithm? Size and Robustness Speed and Accuracy Battery Efficiency and Shelf Life Complexity and Compactness Chagas' disease is an arrhythmia epidemic in parts of South America; how does a person contract this disease? A parasite is transmitted to a person when she/he is bitten by a particular insect. It is a genetic disease that is inherited. A person contracts the disease when she/he eats contaminated meat. Like the common cold, it is transmitted through superficial human contact. In Matlab, a vector is defined as: b = [10 3 4 2 6 8 2 9 5]. What is the result when the following command is applied to this vector: find(b>4.5)? ans = [ ] ans = [10 6 8 9 5] ans = [1 5 6 8 9 ] ans = null ENGE 1104 Spring 2008 In Matlab, a vector is defined as: b = [2 3 4 5 4 3 2]. When the command max(b) is applied to this vector, the result is 5. However, the max command can be used to find both the value and the location of the maximum in a vector. What is the result when the following command is applied to this vector: [val loc] = max(b)? val = 5, loc = 4 val = 5, loc = 5 val = 5, loc = 3 val = 5, loc = unknown If your team's Derivative Method algorithm is working properly, how many KNOWN ECG test signals should it misclassify? 0 1 2 3 If your team's Derivative Method algorithm is working properly, how many UNKNOWN ECG test signals should it misclassify? 0 1 2 3 The Derivative Method and the EFF Method should DISAGREE on the classification of how many UNKNOWN ECG test signals? 0 1 2 3 In the article about Guidant's recall of defective ICD devices, RISK is described as the product of which two factors? (Helpful Shocks) x (Unnecessary Shocks) (Probability of VT Occurrence) x (Not Having Surgery to Implant an ICD) (VT and No ICD) x (SVT and No ICD) (Probability of Harm) x (Severity of Harm) What is the Matlab simulation variable that represents the number of time steps that E. Coli spends in the running state? numTumble state numRun Brownian Motion In the Matlab simulation, how do you calculate the amount of time it took for the bacterium to find its food? size(ECSim) numTumble ENGE 1104 Spring 2008 numRun length(state) What is the underlying idea regarding how to describe or characterize random (stochastic) results? Use average results, not individual results. Give up and become a mechanical engineer. Embrace the uncertainty. Discard bad results. What are the two primary means of locomotion for the bacterium E. Coli? Sit & Spin To & Fro Run & Tumble Hither & Yon In Matlab, let x = [600 620 580 605 595]. What does mean(x) return? 580 error 620 600 A good value for the number of trials to run in the E. Coli simulation is: 500,000 2.5 30 5 When numTumble = 10 in the E. Coli simulation, the optimal numRun value is about: 60 2 10 11 Which one of the following realworld systems does NOT exhibit stochastic behavior? The failure of critical airplane parts. The Dow Jones Industrial Average (DJIA) index of the U.S. stock market. The genetics of offspring. The start date of a new term of the U.S. Supreme Court. ENGE 1104 Spring 2008 ...
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This note was uploaded on 03/20/2008 for the course ENGE 1104 taught by Professor Dr.bell during the Spring '08 term at Virginia Tech.

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