A company sells copiers and performs preventative maintenance and repair services. The manager wants to estimate how long it will take a service person to perform maintenance and repairs during a visit based on the number of copiers they need to service. Data were collected from 45 recent service calls, and regression analysis was performed in a statistics package, yielding the following results. Coef Stdev t-ratio Predictor Constant Number of Copiers 2.8039 0.4831 -0.5802 -0.2069 0.8371 15.0352 31.1233 0.0000 s = 8.9135 R-sq = 95.75% R-sq(adj) = 95.25% (a) What is the equation of the least-squares regression line? (b) Interpret the slope in context of the problem.

A company sells copiers and performs preventative maintenance and repair services. The manager wants to estimate how long it will take a service person to perform maintenance and repairs during a visit based on the number of copiers they need to service. Data were collected from 45 recent service calls, and regression analysis was performed in a statistics package, yielding the following results. Coef Stdev t-ratio Predictor Constant Number of Copiers 2.8039 0.4831 -0.5802 -0.2069 0.8371 15.0352 31.1233 0.0000 s = 8.9135 R-sq = 95.75% R-sq(adj) = 95.25% (a) What is the equation of the least-squares regression line? (b) Interpret the slope in context of the problem.

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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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