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We want to investigate the income data. In the Excel file Midterm Data.xls there is a tab labeled "Income Data 2006". The data in the tab is the income reported by 400 people in a salary survey.
• Compute the sample mean and sample standard deviation for the income data.
• Construct a 98% confidence interval for the income data.
• If you are working for CNN, how would you explain the confidence interval to your audience? Does the confidence interval seem small enough? What would you tell your audience about the implications of this data? Provide a clear and complete answer.
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The quick method for a confidence interval for a proportion uses as an approximation for a 95% confidence interval. The margin of error in this case is slightly larger tha
Primary and Secondary Data: Primary Data: These data are those are collected for the first time. Thus primary data are original in character and gathered by actual observat
worked model
what are characteristics of a population for which it would be appropiate to use mean/median/mode
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Ask question From the household budget survey of 1980 of the Dutch Central Bureau of Statistics, J. S. Cramer obtained the following logit model based on a sample of 2820 househol
You are a business analyst working for a company called Combined Computers Pty Ltd. You have been asked to prepare a business report with statistics in it for the managing director
Examples of grouped, simple and frequency distribution data
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