o profmarg has a statistically insignificant effect on rdintens

Economics For Today
10th Edition
ISBN:9781337613040
Author:Tucker
Publisher:Tucker
Chapter1: Introducing The Economic Way Of Thinking
Section1.A: Applying Graphs To Economics
Problem 12SQ
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3. The variable rdintens is the expenditure on research and development
(R&D) as a percentage of sales. Salary is measured in millions of
dollars. The variable profmarg is profit as a percentage of sales. Let's
suppose the equation below is estimated.
Which statement is true?
rdintens = 472 + .321log(sales) + .050profmarg
(1.369) (216)
(.046)
o profmarg has a statistically significant effect on rdintens at 5% level
o profmarg has a statistically significant effect on rdintens at 10% level
o profmarg has a statistically insignificant effect on rdintens
o profmarg has a statistically significant effect on rdintens at 1% level
Transcribed Image Text:3. The variable rdintens is the expenditure on research and development (R&D) as a percentage of sales. Salary is measured in millions of dollars. The variable profmarg is profit as a percentage of sales. Let's suppose the equation below is estimated. Which statement is true? rdintens = 472 + .321log(sales) + .050profmarg (1.369) (216) (.046) o profmarg has a statistically significant effect on rdintens at 5% level o profmarg has a statistically significant effect on rdintens at 10% level o profmarg has a statistically insignificant effect on rdintens o profmarg has a statistically significant effect on rdintens at 1% level
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