A sample of $210$ sanitation workers for a city earns an average of \$24,375 per year. A record also shows that the standard deviation of all city workers’ income is \$823. What is the average income of all sanitation workers in the city? Conduct an estimate at $0.05 ~ \alpha$ level.
2026-03-28 11:35:27.1774697727
A sample of 210 sanitation workers for a city earns an average of $24,375 per year.
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