tribution (from @Statistics.Distribution.Normal@)
--
-- > λ> mwc $ listOf 10 (normal 4 1)
-- > [ 3.6815394812555144,3.5958531529526727,3.775960990625964
-- > , 4.413109650155896,4.825826384709198,4.805629590118984
-- > , 5.259267547365003,4.45410634165052,4.886537243027636
-- > , 3.0409409067356954 ]
normal :: PrimMonad m
       => Double -- ^ mean
       -> Double -- ^ standard deviation
       -> RandT m Double
normal mean stddev = continuous $ N.normalDistr mean stddev

-- | The stand
normal :: PrimMonad m
       => Double -- ^ mean
       -> Double -- ^ standard deviation
       -> RandT m Double
normal mean stddev = continuous $ N.normalDistr mean stddev
normal mean stddev = continuous $ N.normalDistr mean stddev