Given a population {4, 4, 5, 6, 6, 7, 7, 7, 8, 10, 10, 12, 14} and the following samples of size 4, find the sampling distribution of the mean.

Samples:

{4, 7, 10, 12}

{4, 6, 7, 14}

{5, 8, 10, 12}