Question: Saved Chapter 3 Homework Problem 3-7 12 Freight car loadings over an 18-week period at a busy port are as follows: Number 340 345 Number

Saved Chapter 3 Homework Problem 3-7 12 Freight car loadings over an 18-week period at a busy port are as follows: Number 340 345 Number Week Number Week Week 7. 13 565 405 8. 445 14 15 570 points 620 485 35e 625 345 10 480 16 ettook 350 11 520 17 630 355 12 560 18 635 References a. Determine a linear trend line for expected freight car loadings. (Round your intermediate calculations and final answers to 2 decimal places.) b. Use the above trend equation to predict expected loadings for Weeks 20 & 21. (Round your final answers to 2 decimal places.) The forecasted demand for Week 20 is and for Week 21 is c. The manager intends to Install new equipment when the volume exceeds 920 loadings per week. Assuming the current trend continues, In which week (at the earliest) should the loading volume reach that level? (Use the rounded answers, as required, from any previous part of this problem. Do not round any other intermediate calculations. Round your final answer to 2 decimal pleces.) It should reach 920 loadings in Week

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