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Annual starting salaries for college graduates with degrees in business administration are generally expected to be...

Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $10,000 and $40,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. Given the information in the Microsoft Excel Online file below, construct a spreadsheet to determine how large a sample should be taken for each desired margin of error.

  1. For a margin of error of ± $400 , the required sample size is n =

  2. For a margin of error of ± $270 , the required sample size is n =

  3. For a margin of error of ± $100 , the required sample size is n =

  4. Would you recommend trying to obtain the $100 margin of error? Explain.

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