Answer:
Part 3: The packaging cost for 25000 orders of weight 40,000 pounds with 4000 fragile items is $ 91999.
Part 4: The packaging cost for 25000 orders of weight 40,000 pounds with 2000 fragile items as compared to the cost with 4000 fragile items is reduced by $ 4626.
Step-by-step explanation:
The question lacks the data. So the data is given as in the attached figure which indicates following.
From the part 2 of the question the regression line is found as
![Cost_(packing) = 475 + 2.100n_(order) + 0.7443w_(order)+2.313n_(fragile)](https://img.qammunity.org/2021/formulas/business/college/wdl1corvyb8gkgj1d0r7ywood4krnblmrt.png)
Part 3
Number of orders=25000
Weights=40,000
Number of fragile items=4000
So the value is predicted as
![Cost_(packing) = 475 + 2.100n_(order) + 0.7443w_(order)+2.313n_(fragile)\\Cost_(packing) = 475 + 2.100(25000)+ 0.7443(40000)+2.313(4000)\\Cost_(packing) = \$ 91999](https://img.qammunity.org/2021/formulas/business/college/f1bpmcgma8c9tcf2sxfm66v6ihdo3npwbv.png)
So the packaging cost for 25000 orders of weight 40,000 pounds with 4000 fragile items is $ 91999.
Part 4
Part 3
Number of orders=25000
Weights=40,000
Number of fragile items=2000
So the value is predicted as
![Cost_(packing) = 475 + 2.100n_(order) + 0.7443w_(order)+2.313n_(fragile)\\Cost_(packing) = 475 + 2.100(25000)+ 0.7443(40000)+2.313(2000)\\Cost_(packing) = \$ 87373](https://img.qammunity.org/2021/formulas/business/college/8v68fe3gwve46elusbju9n4sxjsppiragb.png)
Change in cost is
![\Delta Cost=Cost_3-Cost_4\\\Delta Cost=91999-87373\\\Delta Cost=$4626\\](https://img.qammunity.org/2021/formulas/business/college/y4sjqd0wtcu2fk4sl6e1ynvr0dum0c0zlq.png)
So the packaging cost for 25000 orders of weight 40,000 pounds with 2000 fragile items as compared to the cost with 4000 fragile items is reduced by $ 4626.