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

 

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Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $20,000 and $50,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. a. What is the planning value for the population standard deviation? = 7,500 b. How large a sample should be taken if the desired margin of error is $300? Use a rounded z value (2 decimals) in your calculations. Round your answer for n to next whole number. 2401 $170? 79,356 $80? 276,70 c. Would you recommend trying to obtain the $80 margin of error? Explain. Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $20,000 and $50,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. a. What is the planning value for the population standard deviation? = 7,500 b. How large a sample should be taken if the desired margin of error is $300? Use a rounded z value (2 decimals) in your calculations. Round your answer for n to next whole number. 2401 $170? 79,356 $80? 276,70 c. Would you recommend trying to obtain the $80 margin of error? Explain.