A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Click on the datafile logo to reference the data. DATA file 140 Annual Sales ($1000s) +120 +100 +80 +60 Salesperson 1 2 3 4 5 6 7 8 9 10 +40 Years of Experience 1 3 + 4 4 6 8 10 10 . Choose the correct scatter diagram for these data with years of experience as the independent variable. 11 13 Annual Sales ($1000s) 80 97 92 102 103 111 119 123 117 136

A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Click on the datafile logo to reference the data. DATA file 140 Annual Sales ($1000s) +120 +100 +80 +60 Salesperson 1 2 3 4 5 6 7 8 9 10 +40 Years of Experience 1 3 + 4 4 6 8 10 10 . Choose the correct scatter diagram for these data with years of experience as the independent variable. 11 13 Annual Sales ($1000s) 80 97 92 102 103 111 119 123 117 136

Advanced Engineering Mathematics

10th Edition

ISBN:9780470458365

Author:Erwin Kreyszig

Publisher:Erwin Kreyszig

Chapter2: Second-order Linear Odes

Section: Chapter Questions

Problem 1RQ

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Question

Transcribed Image Text:A sales manager collected the following data on annual sales for new customer accounts and the number of years of experience for a sample of 10 salespersons. Click on the datafile logo to reference the data. DATA file A, 140 Annual Sales ($1000s) +120 +100 +80 +60 Salesperson 1 +40 2 3 4 5 6 7 8 9 10 Years of Experience 1 + 3 4 a. Choose the correct scatter diagram for these data with years of experience as the independent variable. 4 6 8 10 10 11 13 Annual Sales ($1000s) 80 97 92 102 103 111 119 123 117 136

C.
B
140 Annual Sales ($1000s)
$120
+100
+80
+60
y =
+40
+20
b. Develop an estimated regression equation that can be used to predict annual sales given the years of experience.
Compute bi and bo (to the nearest whole number).
b₁
bo
Complete the estimated regression equation below.
+
Years of Experience
10 12 1,4
X
c. Use the estimated regression equation to predict annual sales for a salesperson with 9 years of experience (to the nearest whole number).

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