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Management of a soft-drink company wants to develop a method for allocating deli

ID: 3218977 • Letter: M

Question

Management of a soft-drink company wants to develop a method for allocating delivery costs to customers. Although one cost clearly relates to travel time withing a particular route, another variable cost reflects the time required to unload the cases of soft drink at the delivery point. A sample of 20 deliveries within a territory was selected. The delivery times and the number of cases delivered were recorder and provided:

Customer Number of cases Delivery Time 1 52 32.1 2 64 34.8 3 73 36.2 4 85 37.8 5 95 37.8 6 103 39.7 7 116 38.5 8 121 41.9 9 143 44.2 10 157 47.1 11 161 43 12 184 49.4 13 202 57.2 14 218 56.8 15 243 60.6 16 254 61.2 17 267 58.2 18 275 63.1 19 287 65.6 20 298 67.3 luence interval fo price of 2,000 square-foot h edicted Price Y 317.85 ($1,000s) 1 (xp -X) 317.8 The confidence interval endpoints are 2 or from $280,660 $354,900 Prentice-Hall Inc.

Explanation / Answer

Customer

Number of cases

Delivery Time

1

52

32.1

2

64

34.8

3

73

36.2

4

85

37.8

5

95

37.8

6

103

39.7

7

116

38.5

8

121

41.9

9

143

44.2

10

157

47.1

11

161

43

12

184

49.4

13

202

57.2

14

218

56.8

15

243

60.6

16

254

61.2

17

267

58.2

18

275

63.1

19

287

65.6

20

298

67.3

SUMMARY OUTPUT

Regression Statistics

Multiple R

0.985774

R Square

0.971751

Adjusted R Square

0.970182

Standard Error

1.986503

Observations

20

ANOVA

df

SS

MS

F

Significance F

Regression

1

2443.466

2443.466

619.1956

2.15E-15

Residual

18

71.03149

3.946194

Total

19

2514.498

Coefficients

Standard Error

t Stat

P-value

Lower 95%

Upper 95%

Intercept

24.83453

1.054219

23.55729

5.61E-15

22.6197

27.04936

Number of cases

0.140026

0.005627

24.88364

2.15E-15

0.128204

0.151849

y=24.83+0.14(No of cases)

=24.83+0.14(150)

=45.83

Putting in the values in the formula we get the below:-

LCL=45.83-4.17=41.66

UCL=45.83+4.17=50

Customer

Number of cases

Delivery Time

1

52

32.1

2

64

34.8

3

73

36.2

4

85

37.8

5

95

37.8

6

103

39.7

7

116

38.5

8

121

41.9

9

143

44.2

10

157

47.1

11

161

43

12

184

49.4

13

202

57.2

14

218

56.8

15

243

60.6

16

254

61.2

17

267

58.2

18

275

63.1

19

287

65.6

20

298

67.3

SUMMARY OUTPUT

Regression Statistics

Multiple R

0.985774

R Square

0.971751

Adjusted R Square

0.970182

Standard Error

1.986503

Observations

20

ANOVA

df

SS

MS

F

Significance F

Regression

1

2443.466

2443.466

619.1956

2.15E-15

Residual

18

71.03149

3.946194

Total

19

2514.498

Coefficients

Standard Error

t Stat

P-value

Lower 95%

Upper 95%

Intercept

24.83453

1.054219

23.55729

5.61E-15

22.6197

27.04936

Number of cases

0.140026

0.005627

24.88364

2.15E-15

0.128204

0.151849

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