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 trend equation to predict expected loadings for weeks 20 and 21. (Round your final answers to 2 decimal places.) The forecasted demand for week 20 and 21 is and respectively.
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 trend equation to predict expected loadings for weeks 20 and 21. (Round your final answers to 2 decimal places.) The forecasted demand for week 20 and 21 is and respectively.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Transcribed Image Text:Freight car loadings over an 18-week period at a busy port are as follows:
Week
Number
Week
Number
Week
Number
220
7
350
13
460
245
8
360
14
475
280
9
400
15
500
4
275
10
380
16
510
300
11
420
17
525
6
310
12
450
18
541
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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 trend equation to predict expected loadings for weeks 20 and 21. (Round your final answers to 2 decimal places.)
|respectively.
The forecasted demand for week 20 and 21 is
and
c. The manager intends to install new equipment when the volume exceeds 800 loadings per week. Assuming the current trend
continues, the loading volume will reach that level in approximately how many more weeks? (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
places.)
It would take approximately
more weeks.
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