I want to estimate the average age of students graduating this semester. I sample 36 students and calculate a mean age of 23. I know that the for this population is 2.5. I want to be 95% confident in my confidence interval. What is the standard error (SE)?

A- .42

B- .07

C- .79

D- 1.96

I want to estimate the average age of students graduating this semester. I sample 36 students and calculate a mean age of 23. I know that the for this population is 2.5. I want to be 95% confident in my confidence interval. What is the confidence interval?

A- [22.18, 23.82]

B- [21.04, 24.96]

C- [22.58, 23.42]

D- [21.21, 24.79]