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Question: freight car loadings over an 18week period at a busy...

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Freight car loadings over an 18-week period at a busy port are as follows: Number 280 295 310 295 310 320 350 400 450 435 13 14 15 16 17 18 545 585 680 615 630 10 485 535 12 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 isand for Week 21 is c. The manager intends to install new equipment when the volume exceeds 860 loadings per week. Assuming the current trencd continues, in which week (at the earliest) should the loading volume reach that level? (Use the rounded answers, as required, fro any previous part of this problem. Do not round any other intermediate calculations. Round your final answer to 2 decimal laces.) It should reach 860 loadings in Week
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