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? 0 = 37500 0 b. How large a sample should be taken if the desired margin of error is $300? Round your answers to next whole number. 0 $230? 0 $130? 0 c. Would you recommend trying to obtain the $130 margin of error? Explain. No, the sample size would probably be too time consuming and costly. v '09