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, and$(4)$ is correctly billed. MountainMole has the following performance figures for the past four years.

LOADING... Click the icon to view the performance table.

Part $2$

a$.$ Assuming that there is at most one error per$$ order, calculate performance for each of the four years $($enter your responses rounded to two decimal places$).$

Part $3$Part $4$Part $5$

Year

Percentage of perfect orders

$2015$

$$

$99\mathrm{.}57\%$

$2016$

$$

$93\mathrm{.}94\%$

$2017$

$$

$85\%$

$2018$

$$

$89\mathrm{.}18\%$

Part $6$

The overall trend in performance is

downward

constant

downward

upward

$.$

Part $7$

What factors explain the$$ results?

A$.$

The number of errors increases each year at a lower rate than the number of orders is increasing.

B$.$

The number of errors decreases each year at a lower rate than the number of orders is increasing.

C$.$

The number of errors remains the same level each$$ year, but the number of orders increases.

D$.$

The number of errors increases each year at a higher rate than the number of orders is increasing.

Part $8$

b$.$ If someone was looking to improve$$ MountainMole's logistics$$ performance, one should concentrate on the

correctly billed shipments

correctly billed shipments

on$-$time shipments

undamaged shipments

complete shipments

$.$