STATS_Quizes - Autograde Summary Date Taken: 11/25/2007...

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Autograde Summary These are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below. Question Type: # Questions: # Correct: True/False 2 0 Multiple choice 7 0 Short 16 N/A Essay 15 N/A Date Taken: 11/25/2007 8:59:48 PM Time Spent: 438312:00:00 Points Received: 0 / 150 (0%)
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JavaScript is required for your course. Please ensure JavaScript is enabled in your browser preferences. Grade Details 1. Question: State whether the variable is discrete or continuous. The # of keys on each student's key chain. Your Answer: Instructor Explanation: Because you can count the number of keys and this is an integer value, this is discrete data Points Received: (not graded) Comments: 2. Question: State whether the variable is discrete or continuous. The number of games won by each Big Ten football team this year. Your Answer: Instructor Explanation: Because you can count the number of games won and this is an integer value, this is discrete data Points Received: (not graded) Comments: 3. Question: State whether the variable is discrete or continuous. The number of cups of coffee sold in a cafeteria during lunch. Your Answer: Instructor Explanation: Because you can count the number sold and this is an integer value, this is discrete data. Points Received: (not graded) Comments: 4. Question: Decide whether the experiment is a binomial experiment. Explain why by citing the properties of binomial experiments.
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Testing a pain reliever using 20 people to determine if it is effective. The random variable represents the number of people who find the pain reliever to be effective. Your Answer: Instructor Explanation: Testing a pain reliever using 20 people to determine if it is effective. The random variable represents the number of people who find the pain reliever to be effective. Yes, this is a binomial. The pain reliever is either effective or ineffective on each dose (trial). The probability of it working is the same on every trial, so this would be a legitimate binomial probability experiment. Points Received: (not graded) Comments: 5. Question: Decide whether the experiment is a binomial experiment. Explain why by citing the properties of binomial experiments. Surveying 100 prisoners to see how many crimes for which they were convicted. The random variable represents the number of crimes for which each prisoner was convicted. Your Answer: Instructor Explanation: Surveying 100 prisoners to see how many crimes for which they were convicted. The random variable represents the number of crimes for which each prisoner was convicted. No, this is not a binomial. Each prisoner has committed one or more crimes. This is not an either/or type of binomial situation and the probability of committing crimes is different for each prisoner. In fact, it would be difficult to assign this probability. Points
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STATS_Quizes - Autograde Summary Date Taken: 11/25/2007...

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