Bonus Problem$)(8$ points$)$

MountainMole Foods has decided to use the perfect order measurement approach to track its

logistics performance. According to MountainMole, a perfect order is one that $(1)$ is delivered on

time, $(2)$ arrives in one complete shipment, $(3)$ arrives undamaged, $(4)$ is correctly billed.

MountainMole has the following performance figures for the past four years: $($Assume that there

is at most one error per order.$)$

a$)$ Calculate performance for each of the four years. What is the overall trend in the

performance, if any? What factors explain the results? $(6$ points$)$

b$)$ If you were looking to improve MountainMole's logistics performance, what areas might

you concentrate on based on these results? $(2$ points$).$