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ismailhajisaid29101
15.04.2020 •
Mathematics
You are planning a survey of starting salaries for recent business major graduates from your college. From a pilot study you estimate that the standard deviation is about $9000. What sample size do you need to have a margin of error equal to $500 with 95% confidence?How do I calculate this using excel?
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Ответ:
1245
Step-by-step explanation:
-Given the standard deviation is $9000 and the margin of error is $500.
-the minimum sample size at a 95% confidence level can be calculated using the formula:
Hence, the minimum sample size is 1245
*Since there's no data fromw which we are drawing our variables, we can manually input our parameters in excel and calculate as attached.
Ответ: