Simulates the loads
(weights) of sums of bags (grouped in pallets) according to
a doubly truncated Poisson distribution. The bags' weights
are assumed Gaussian.
Simulated values are: a truncated Poisson
for the number of pallets; and a Gaussian with given parameters
(μ and σ) for the individual bags.
Draws a plot of the simulated numbers of pallets
per load. | 
