Davidson Engine Repairs provides maintenance and repair services for small engines such as those found in lawn mowers, power saws, and snow throwers. The repair shop costs include the salaries for the mechanics, insurance and depreciation on the repair equipment, materials and parts used for the jobs, and utilities. The repair shop manager would like to develop a model for predicting repair costs and over the past 10 months has carefully recorded the total repair costs incurred, along with the number of maintenance and repair jobs completed each month. The data are shown below: Month January February March April May June July August Jobs Repair Costs 242 284 250 |Y= 246 313 278 217 193 September 163 October 116 $36,610 $41,395 $37,950 $36,840 $44,340 $40,120 $33,660 $28,990 $25,275 $18,730 Required: 1. Not available in Connect. 2. Using the high-low method, estimate a cost formula for repair costs. Express the formula in the form Y = a + bx. X

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ISBN:9781947172609
Author:OpenStax
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Chapter10: Short-term Decision Making
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Davidson Engine Repairs provides maintenance and repair services for small engines such as those found
in lawn mowers, power saws, and snow throwers. The repair shop costs include the salaries for the
mechanics, insurance and depreciation on the repair equipment, materials and parts used for the jobs, and
utilities. The repair shop manager would like to develop a model for predicting repair costs and over the
past 10 months has carefully recorded the total repair costs incurred, along with the number of maintenance
and repair jobs completed each month. The data are shown below:
Month
January
February
March
250
246
313
278
217
193
September 163
October
116
April
May
June
July
August
Jobs Repair Costs
$36,610
242
284
$41,395
Y =
$37,950
$36,840
$44,340
$40,120
$33,660
$28,990
$25,275
$18,730
Required:
1. Not available in Connect.
2. Using the high-low method, estimate a cost formula for repair costs. Express the formula in the form Y = a + bX.
X
Transcribed Image Text:Davidson Engine Repairs provides maintenance and repair services for small engines such as those found in lawn mowers, power saws, and snow throwers. The repair shop costs include the salaries for the mechanics, insurance and depreciation on the repair equipment, materials and parts used for the jobs, and utilities. The repair shop manager would like to develop a model for predicting repair costs and over the past 10 months has carefully recorded the total repair costs incurred, along with the number of maintenance and repair jobs completed each month. The data are shown below: Month January February March 250 246 313 278 217 193 September 163 October 116 April May June July August Jobs Repair Costs $36,610 242 284 $41,395 Y = $37,950 $36,840 $44,340 $40,120 $33,660 $28,990 $25,275 $18,730 Required: 1. Not available in Connect. 2. Using the high-low method, estimate a cost formula for repair costs. Express the formula in the form Y = a + bX. X
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