Random Samples of Size 2 Are Selected from the Finite $\frac{1}{15}$

Random samples of size 2 are selected from the finite population which consists of the numbers 4, 7, 10, 13, 16, and 19.
-Construct the sampling distribution of the mean for the 15 possible random samples of size 2 from the given finite population. Assign each possible sample a probability of $\frac{1}{15}$ .