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.
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.
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
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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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