WEEK3QUIZ

WEEK3QUIZ - average time to complete a tax form? Student...

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Grading 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.  Date Taken:  9/4/2011 Time Spent: 47 min , 28 secs  Points Received: 18 / 20  (90%)  Question Type: # Of Questions: # Correct: Multiple Choice 20 18 Grade Details
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 1. Question : An accounting firm is planning for the next tax preparation season. From last year's  returns, the firm collects a systematic random sample of 100 filings. The 100 filings  showed an average preparation time of 90 minutes with a standard deviation of 140  minutes. What assumptions do you need to make about the shape of the population  distribution of all possible tax preparation times to make inferences about the 
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Unformatted text preview: average time to complete a tax form? Student Answer: The population distribution is skewed to the right. The population distribution is skewed to the left. The population distribution is normal. The shape of the population distribution does not matter. Points Received: 1 of 1 Comments: 2. Question : Suppose we select every fifth invoice in a file. What type of sampling is this? Student Answer: Random Cluster Stratified Systematic Points Received: 1 of 1 Comments: 3. Question : For a distribution of sample means constructed by sampling 5 items from a population of 15, * Times are displayed in (GMT-06:00) Central Time (US & Canada)...
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This note was uploaded on 10/07/2011 for the course EC 315 taught by Professor Barcus during the Spring '10 term at Park.

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WEEK3QUIZ - average time to complete a tax form? Student...

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