How large a sample should be taken if the desired margin of


Annual starting salaries for college graduates with degrees in business administration are generally expected to be between $30,000 and $45,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is desired. What is the planning value for the population standard deviation (0 decimals)?

__________ 

How large a sample should be taken if the desired margin of error is as shown below (0 decimals)? 

 

a. $500? __________ 

 

b. $200? __________ 

 

c. $100? __________ 

 

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

_________________

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Basic Statistics: How large a sample should be taken if the desired margin of
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