If M C = 5 and M E = 10, for which situation is the 95% confidence

Question:

If M_C = 5 and M_E = 10, for which situation is the 95% confidence interval for the difference between population means the widest?
a. N = 5 and s_MD = 5.28
b. N = 10 and s_MD = 5.28
c. N = 20 and s_MD = 5.28
d. All confidence intervals are equally wide.

e. Not enough information was presented to answer this question.

Fantastic news! We've Found the answer you've been seeking!