D 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. a. What is the planning value for the population standard deviation? = 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. $210? $100? 1 c. Would you recommend trying to obtain the $100 margin of error? Explain. Select your answer -

Annual starting salaries for college praduates 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. a. What is the planning value for the population standard deviation? = b. How large a sample should be taken if the desired margin of error is $300 ? Use a rounded z value ( 2 decimals) in vour calculations. Round vour answer for n to next whole number. $210? $100? c. Would vou recommend trvina to obtain the $100 margin of error? Explain