Explain a linear trend line for expected freight car, Operation Management

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Freight car loadings over a 12-year period at a busy port are as follows: Week Number Week Number Week Number 1 220 7 350 13 488 2 245 8 360 14 475 3 274 9 440 15 499 4 275 10 380 16 510 5 321 11 458 17 506 6 310 12 450 18 541 a. Determine a linear trend line for expected freight car loadings. (Round your intermediate calculations and final answers to 3 decimal places.) = + t b. Use the trend equation to predict expected loadings for weeks 23 and 24. (Round your intermediate calculations and final answers to 3 decimal places.) The forecasted demand for week 23 and 24 is and respectively. c. The manager intends to install new equipment when the volume exceeds 820 loadings per week. Assuming the current trend continues, the loading volume will reach that level in approximately what week? (Round your intermediate calculations to 3 decimal places and final answer to the nearest whole number.) It would take approximately more weeks


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