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d) Conduct a test of the population slope to determine at the 5% significance level whether a linear relationship exists between years of experience and sales. e) Determine the coefficient of determination and discuss what its value tells you about the two variables.

d) Conduct a test of the population slope to determine at the 5% significance level whether a linear relationship exists between years of experience and sales. e) Determine the coefficient of determination and discuss what its value tells you about the two variables.

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Can you do only parts D and E
25. The general manager of a chain of furniture stores believes that experience is the most important factor in determining the level of success of a salesperson. To examine this belief she records last month's sales (in $1,000s) and the years of experience of 10 randomly selected salespeople. These data are listed below. Salesperson Years of Experience Sales 7 9 20 15 18 14 20 17 30 25 2 0 34567 223852125 8 9 10 10 7 20 a) Determine the least squares regression line. b) Interpret the value of the slope of the regression line. c) Estimate the monthly sales for a salesperson with 16 years of experience. d) Conduct a test of the population slope to determine at the 5% significance level whether a linear relationship exists between years of experience and sales. e) Determine the coefficient of determination and discuss what its value tells you about the two variables.
Transcribed Image Text:25. The general manager of a chain of furniture stores believes that experience is the most important factor in determining the level of success of a salesperson. To examine this belief she records last month's sales (in $1,000s) and the years of experience of 10 randomly selected salespeople. These data are listed below. Salesperson Years of Experience Sales 7 9 20 15 18 14 20 17 30 25 2 0 34567 223852125 8 9 10 10 7 20 a) Determine the least squares regression line. b) Interpret the value of the slope of the regression line. c) Estimate the monthly sales for a salesperson with 16 years of experience. d) Conduct a test of the population slope to determine at the 5% significance level whether a linear relationship exists between years of experience and sales. e) Determine the coefficient of determination and discuss what its value tells you about the two variables.
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