Week 7 Quiz - Numeric grade: 4 Letter grade: F Comments:...

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4 Letter grade: F Comments: (none) Close Window 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: Multiple choice 6 1 Essay 3 N/A JavaScript is required for your course. Please ensure JavaScript is enabled in your browser preferences. Grade Details 1 . Question: what is the critical value that corresponds to a confidence level of 92% Your Answer: approximately 1.48 INCORRECT approximately 1.55 approximately 1.75 CORRECT ANSWER none of these Points Received: 0 of 4 2 . Question: Compute the margin of error for a 99% confidence interval when sigma is 4 and the sample size is 36. Your Answer: ± 1.3066. .. ± 1.0966. .. ± 1.7166. .. CORRECT ANSWER none of these INCORRECT Points Received: 0 of 4 3 . Question: A standard IQ test has a mean of 98 and a standard deviation of 16. We want to be 95% certain that we are within 8 IQ points of the true mean. Determine the sample size.
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Week 7 Quiz - Numeric grade: 4 Letter grade: F Comments:...

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