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How large a sample would we have needed

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Recent Data Science graduates make $115,000 per year on average with a standard deviation of $20,000. A random sample collected data from 300 graduates in Silicon Valley and found an average salary of $119,000. If we wanted to estimate μ with 99% confidence interval with a margin of error of 2000, how large a sample would we have needed?

Reference no: EM132192990

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