Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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Question
![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](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb1008a76-ec50-4c66-a73c-24aeebd78514%2Fe0f976cf-c457-4248-98fb-7f808fb38b1c%2Flrsgm87_processed.jpeg&w=3840&q=75)
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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