A company is modelling its revenue based on the sales make by its marketers, its summer sales,

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A company is modelling its revenue based on the sales make by its marketers, its summer sales, fall sales and winter sales for all the units in $000. It determined the following regression model from a sample of 35.

where

ŷ = Revenue
x= Marketers’ sales
x2 = Summer sales
x3 = Fall sales
x= Winter sales

The numbers below the coefficients are the coefficient standard errors.
a. Interpret the estimated coefficient on x1.
b. Using the Durbin-Watson statistic, test at the 5% level the null hypothesis of positive autocorrelation of error terms.
c. Estimate the autocorrelation parameter.

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Related Book For  book-img-for-question

Statistics For Business And Economics

ISBN: 9781292315034

9th Global Edition

Authors: Paul Newbold, William Carlson, Betty Thorne

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