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[answered] Managementof a soft-drink bottling company has the business


Managementof a soft-drink bottling company has the business objective of developing amethod for allocating delivery costs to customers. Although one cost clearlyrelates to travel time within a particular route, another variable cost reflectsthe time. To begin, management decided to develop a regression model to predictdelivery time based on the number of cases delivered. A sample of 20 deliverieswithin a territory was selected. The delivery times and the number of casesdelivered were organized in the following table.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

Customers

Number of Cases

Delivery Time (minutes)

1

52

32

2

64

35

3

73

36

4

85

38

5

95

38

6

103

40

7

116

39

8

121

42

9

143

44

10

157

47

11

161

43

12

184

49

13

202

57

14

218

57

15

243

61

16

254

61

17

267

58

18

275

63

19

287

66

20

298

67

a)???What is the dependent variable? Why? Label it as Y and find itsmean value

b)???What is the independent variable? Why?

c)???Construct a scatter plot. Hint: see page 430

d)???For these data, b0 = 124.84 and b1 = 0.14. Interpretthe meaning of b0 and b1 in this problem.

e)???What is the predicted line in this problem? Hint: See page 43 or 432

f)????Predict the mean delivery time for 150cases of soft drink?

Question 2

IfSSR = 66 and SST = 88:

a.??? Determine thecoefficient of determination, r2, and interpret its meaning. Show your work

b.??? Determine the standarderror of estimate. Show your work

 


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