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please help answer thank you! salary is desired. a. What is the planning value for the population standard deviation? = b. How large a sample

please help answer thank you!

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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 $500 ? Round your answers to next whole number. $200 ? $100? c. Would you recommend trying to obtain the $100 margin of error? Explain. Hide Feedback

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