You are interested in the effect of a new smoking restriction implemented by restaurants. That is, the effect of restaurants implementing a no-smoke zone within 15 feet of their premises on the number of packs of cigarettes smoked per day. You first run the following regression: cigs Bo B₁educ + B₂income+ + Brage²+ Barestaurn + Bln(cigprice) + u
You are interested in the effect of a new smoking restriction implemented by restaurants. That is, the effect of restaurants implementing a no-smoke zone within 15 feet of their premises on the number of packs of cigarettes smoked per day. You first run the following regression: cigs Bo B₁educ + B₂income+ + Brage²+ Barestaurn + Bln(cigprice) + u
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
Related questions
Question
![Thank You for Smoking?
You are interested in the effect of a new smoking restriction implemented by restaurants. That is, the
effect of restaurants implementing a no-smoke zone within 15 feet of their premises on the number
of packs of cigarettes smoked per day. You first run the following regression:
cigs BoBieduc + B₂income+
=
+ B3age²+ B4restaurn + B5 ln(cigprice) + u
Where cigs is the number of cigs smoked per day, education is the number of years of formal
schooling, income is annual income, in terms of 1000s, age is in years, restaurn is a dummy variable =
1 if the restaurant implemented this new smoking policy, and In(cigprice) is the log of the cigarette
price.
You get the following regression printout:
Source
Model
Residual
Total
cigs
educ
income
SS
3546.27245
148207.41
151753.683
df
agesq
restaurn
lcigpric -.0307437
_cons
5
801
Coef. Std. Err.
806
-.4027925
.0001243
-.0007576
.000312
-2.990738 1.129767
.1694947
.0000559
Answer the following questions.
13.68142 23.94006
MS
709.254491
185.027978
188.280003
Number of obs
F(5, 801)
Prob > F
R-squared
Adj R-squared
Root MSE
t P>|t|
-2.43 0.015
-2.65 0.008
-0.01 0.996
0.57 0.568
=
=
=
=
(INCREASE or DECREASE) in the number of cigarettes smoked, per day, by
807
3.83
0.0019
13.602
[95% Conf. Interval]
-.0013699 -.0001452
-5.208391 -.7730854
-11.51362
-33.31125
11.45213
60.67409
A. Calculate R²
Do NOT include the % symbol.
B. How many explanatory variables are statistically significant at the 90% level of confidence. Write
the number of your answer.
C. Interpret 34. Complete the following sentence.
"Restaurants that implemented the new smoking policy saw an expected
Round to 2 decimal places. Leave your answer as a percentage.
Note: 1st box is either INCREASE or DECREASE. 2nd box is a value, ROUND TO A WHOLE
NUMBER. Be careful when completing the sentence and mindful of how to read negative signs.
D. Using ONLY the information available to you from this question, does this regression suffer from
an obvious omitted variable bias? Answer "YES" or "NO".
E. If this model is suffering from omitted variable bias, what variable do we need to include? If there
is no bias, write "NONE".](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa49858c5-80b6-4c57-99be-69ceecee9722%2Fb59e87e7-8f84-4d4f-9df0-bf7815eb13e7%2Fp3j37ll_processed.png&w=3840&q=75)
Transcribed Image Text:Thank You for Smoking?
You are interested in the effect of a new smoking restriction implemented by restaurants. That is, the
effect of restaurants implementing a no-smoke zone within 15 feet of their premises on the number
of packs of cigarettes smoked per day. You first run the following regression:
cigs BoBieduc + B₂income+
=
+ B3age²+ B4restaurn + B5 ln(cigprice) + u
Where cigs is the number of cigs smoked per day, education is the number of years of formal
schooling, income is annual income, in terms of 1000s, age is in years, restaurn is a dummy variable =
1 if the restaurant implemented this new smoking policy, and In(cigprice) is the log of the cigarette
price.
You get the following regression printout:
Source
Model
Residual
Total
cigs
educ
income
SS
3546.27245
148207.41
151753.683
df
agesq
restaurn
lcigpric -.0307437
_cons
5
801
Coef. Std. Err.
806
-.4027925
.0001243
-.0007576
.000312
-2.990738 1.129767
.1694947
.0000559
Answer the following questions.
13.68142 23.94006
MS
709.254491
185.027978
188.280003
Number of obs
F(5, 801)
Prob > F
R-squared
Adj R-squared
Root MSE
t P>|t|
-2.43 0.015
-2.65 0.008
-0.01 0.996
0.57 0.568
=
=
=
=
(INCREASE or DECREASE) in the number of cigarettes smoked, per day, by
807
3.83
0.0019
13.602
[95% Conf. Interval]
-.0013699 -.0001452
-5.208391 -.7730854
-11.51362
-33.31125
11.45213
60.67409
A. Calculate R²
Do NOT include the % symbol.
B. How many explanatory variables are statistically significant at the 90% level of confidence. Write
the number of your answer.
C. Interpret 34. Complete the following sentence.
"Restaurants that implemented the new smoking policy saw an expected
Round to 2 decimal places. Leave your answer as a percentage.
Note: 1st box is either INCREASE or DECREASE. 2nd box is a value, ROUND TO A WHOLE
NUMBER. Be careful when completing the sentence and mindful of how to read negative signs.
D. Using ONLY the information available to you from this question, does this regression suffer from
an obvious omitted variable bias? Answer "YES" or "NO".
E. If this model is suffering from omitted variable bias, what variable do we need to include? If there
is no bias, write "NONE".
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