Business statistics problems

From the book “Quantitative analysis for management”, From Chapter 8, please complete Problems 8-5, 8-13, 8-19, and 8-23, on pages 315 – 320 in your text.

Calculations should be done in an excel file 
As part of the Assignment Outcomes and the written explanation of the questions, please Discover how simplex methods are effective for management control.
Discuss why modeling is an effective method