Worker Safety an OSHA Agent Wanted to Determine If Efforts

Essay

Worker Safety An OSHA agent wanted to determine if efforts to promote safety have been successful. By checking the records of 250 workers, he found that 30 of them suffered either minor or major injuries that year. A random sample of 400 workers last year revealed that 80 suffered some form of injury. {Worker Safety Narrative} Estimate with 95% confidence the difference in population proportions.