Restricts a distribution to an interval and renormalizes it,
TruncatedDistribution[{xmin, xmax}, dist]
TruncatedDistribution[{{xmin, xmax}, {ymin, ymax}, …}, dist]
PDF[TruncatedDistribution[{1, 3}, UniformDistribution[{0, 4}]], 2]
→ 1/2CDF[TruncatedDistribution[{1, 3}, UniformDistribution[{0, 4}]], 5]
→ 1Mean[TruncatedDistribution[{0, 2}, UniformDistribution[{0, 4}]]]
→ 1