Question: Recently, a university surveyed recent graduates of the English Department for their starting salaries. Four hundred graduates returned the survey. The average salary was $25,000 with a standard deviation of $2,500. What is the 95% confidence interval for the mean salary of all graduates from the English Department?
[$22,500, $27,500]
[$24,755, $25,245]
[$24,988, $25,012]
[$24,600, $25,600]