Two Work-Study students were hired to check and test the reproducibility of some new
Student A prepared three samples of
the same resolved amine by repeating a resolution experiment three times. Student B
performed three measurements of the specific rotations for all three samples supplied by
Student A. The measurements are:

Sample from Student A --------- [a] Measurements by Student B
1 ------------------------------ +9.46, +9.49, +9.48
2 ------------------------------ +9.54, +9.56, +9.50
3 ------------------------------- +9.65, +9.66, +9.69

Provide statistically correct estimates of the specific rotation and its uncertainty.