Annual starting salaries for college graduates with degrees in business administration are generally expected to be betwe $20,000 and $50,000. Assume that a 95% confidence interval estimate of the population mean annual starting salary is 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 $400? Round your answers to next whole numbe $170? $110? c. Would you recommend trying to obtain the $110 margin of error? Explain. - Select your answer-

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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?
o =
b. How large a sample should be taken if the desired margin of error is $400? Round your answers to next whole number.
$170?
$110?
c. Would you recommend trying to obtain the $110 margin of error? Explain.
- Select your answer -
Transcribed Image Text: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? o = b. How large a sample should be taken if the desired margin of error is $400? Round your answers to next whole number. $170? $110? c. Would you recommend trying to obtain the $110 margin of error? Explain. - Select your answer -
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