- Mean of the distribution of sample mean differences: μdifference=−0.22
- Standard deviation of the distribution of sample mean differences: σdifference≈0.162
- Probability that the mean GPA of night students is greater than that of day students: P≈0.0871
Thus, the final answers are:
μdifference=−0.22
σdifference≈0.162
P≈0.0871