Finding 95% confidence interval using normal distribution.

At a large university, students have an average credit card debt of $2500, with a standard deviation of $1200. A random sample of students is selected and interviewed about their credit card debt. Use the Rule to answer the question about the mean credit card debt for the students in this sample.

If we imagine all the possible random samples of 250 students at this university, 95% of the samples should have means between what two numbers?

o $2348.22 and $2651.78
o $300 and $4900
o $250.00 and $2651.78
o $250.00 and $2575.89
o $2272.33 and $2727.67