A study in 2008 looked at how commuters' commute time changed when car pool lanes were added in Georgia. In 1999 -- before the lanes were added the average commute time in Florida -- (with no new car pool lanes) was 20 minutes and in Georgia was 25 minutes. In 2006 -- after the lanes were added -- those numbers were both equal to 30. What is the diff-in-diffs estimate of th effect of adding these lanes in Georgia? Input the number as a whole number with no decimals, ar be sure to include it as negative if the effect was to decrease commute times in Georgia. If you cannot say without more information, input 99.

ENGR.ECONOMIC ANALYSIS
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ISBN:9780190931919
Author:NEWNAN
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Chapter1: Making Economics Decisions
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A study in 2008 looked at how commuters' commute time changed when car pool lanes were
added in Georgia. In 1999 -- before the lanes were added -- the average commute time in Florida
(with no new car pool lanes) was 20 minutes and in Georgia was 25 minutes. In 2006 -- after the
lanes were added -- those numbers were both equal to 30. What is the diff-in-diffs estimate of the
effect of adding these lanes in Georgia? Input the number as a whole number with no decimals, and
be sure to include it as negative if the effect was to decrease commute times in Georgia. If you
cannot say without more information, input 99.
Transcribed Image Text:A study in 2008 looked at how commuters' commute time changed when car pool lanes were added in Georgia. In 1999 -- before the lanes were added -- the average commute time in Florida (with no new car pool lanes) was 20 minutes and in Georgia was 25 minutes. In 2006 -- after the lanes were added -- those numbers were both equal to 30. What is the diff-in-diffs estimate of the effect of adding these lanes in Georgia? Input the number as a whole number with no decimals, and be sure to include it as negative if the effect was to decrease commute times in Georgia. If you cannot say without more information, input 99.
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