## [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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