primary school students. Teach- 7.6 In 1985, the state of Tennessee carried out a st ers and students were randomly assigned to be in a regular-sized class or a small class. The outcome of interest is a student's score on a math achievement test (MATHSCORE). Let SMALL = 1 if the student is in a small class and SMALL = 0 otherwise. The other variable of interest is the number of years of teacher experience, TCHEXPER. Let BOY = 1 if the child is male and BOY = 0 if the child is female. sometric specification of the linear regression model

Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
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Please and 7.6(a) in its entirety, thanks!
is the test reject
iv. It is conjectured that boys may benefit from small classes more than girls. What null and alter-
native hypothesis would you test to examine this conjecture? [Hint: Let the conjecture be the
alternative hypothesis.]
7.6 In 1985, the state of Tennessee carried out a statewide experiment with primary school students. Teach-
ers and students were randomly assigned to be in a regular-sized class or a small class. The outcome
of interest is a student's score on a math achievement test (MATHSCORE). Let SMALL = 1 if the
student is in a small class and SMALL = 0 otherwise. The other variable of interest is the number of
years of teacher experience, TCHEXPER. Let BOY= 1 if the child is male and BOY = 0 if the child
is female.
a. Write down the econometric specification of the linear regression model explaining MATHSCORE
as a function of SMALL, TCHEXPER, BOY and BOY X TCHEXPER, with parameters B₁, B₂,....
i. What is the expected math score for a boy in a small class with a teacher having 10 years of
experience?
ii. What is the expected math score for a girl in a regular-sized class with a teacher having
10 years of experience?
iii. What is the change in the expected math score for a boy in a small class with a teacher having
11 years of experience rather than 10?
iv. What is the change in the expected math score for a boy in a small class with a teacher having
13 years of experience rather than 12?
v. State, in terms of the model parameters, the null hypothesis that the marginal effect of teacher
experience on expected math score does not differ between boys and girls, against the alterna-
tive that boys benefit more from additional teacher experience. What test statistic would you use
to carry out this test? What is the distribution of the test statistic assuming then null hypothesis
is true, if N = 1200? What is the rejection region for a 5% test?
b. Modify the model in part (a) to include SMALL X BOY.
i. What is the expected math score for a boy in a small class with a teacher having 10 years of
experience?
ii. What is the expected math score for a girl in a regular-sized class with a teacher having
10 years of experience?
iii. What is the expected math score for a boy? What is it for a girl?
Transcribed Image Text:is the test reject iv. It is conjectured that boys may benefit from small classes more than girls. What null and alter- native hypothesis would you test to examine this conjecture? [Hint: Let the conjecture be the alternative hypothesis.] 7.6 In 1985, the state of Tennessee carried out a statewide experiment with primary school students. Teach- ers and students were randomly assigned to be in a regular-sized class or a small class. The outcome of interest is a student's score on a math achievement test (MATHSCORE). Let SMALL = 1 if the student is in a small class and SMALL = 0 otherwise. The other variable of interest is the number of years of teacher experience, TCHEXPER. Let BOY= 1 if the child is male and BOY = 0 if the child is female. a. Write down the econometric specification of the linear regression model explaining MATHSCORE as a function of SMALL, TCHEXPER, BOY and BOY X TCHEXPER, with parameters B₁, B₂,.... i. What is the expected math score for a boy in a small class with a teacher having 10 years of experience? ii. What is the expected math score for a girl in a regular-sized class with a teacher having 10 years of experience? iii. What is the change in the expected math score for a boy in a small class with a teacher having 11 years of experience rather than 10? iv. What is the change in the expected math score for a boy in a small class with a teacher having 13 years of experience rather than 12? v. State, in terms of the model parameters, the null hypothesis that the marginal effect of teacher experience on expected math score does not differ between boys and girls, against the alterna- tive that boys benefit more from additional teacher experience. What test statistic would you use to carry out this test? What is the distribution of the test statistic assuming then null hypothesis is true, if N = 1200? What is the rejection region for a 5% test? b. Modify the model in part (a) to include SMALL X BOY. i. What is the expected math score for a boy in a small class with a teacher having 10 years of experience? ii. What is the expected math score for a girl in a regular-sized class with a teacher having 10 years of experience? iii. What is the expected math score for a boy? What is it for a girl?
mead
7 Using Indicator Variables
TAB iv. State, in terms of the part (b) model parameters, the null hypothesis that the expected math
score does not differ between boys and girls, against the alternative that there is a difference in
expected math score for boys and girls. What test statistic would you use to carry out this test?
What is the distribution of the test statistic assuming the null hypothesis is true, if N = 1200?
What is the rejection region for a 5% test?
7.7 Can monetary policy reduce the impact of a severe recession? A natural experiment is provided by
the State of Mississippi. In December of 1930, there were a series of bank failures in the southern
1o o United States. The central portion of Mississippi falls into two Federal Reserve Districts: the sixth
b(Atlanta Fed) and the eighth (St. Louis Fed). The Atlanta Fed offered "easy money" to banks while
to the St. Louis Fed did not. On July 1, 1930 (just before the crisis), there were 105 State Charter banks
in Mississippi in the sixth district and 154 banks in the eighth district. On July 1, 1931 (just after
and the crisis), there were 96 banks remaining in the sixth district and 126 in the eighth district. These
dah data values are from Table 1, Gary Richardson and William Troost (2009) "Monetary Intervention
Mitigated Banking Panics during the Great Depression: Quasi-Experimental Evidence from a Federal
Bal Reserve District Border, 1929-1933," Journal of Political Economy, 117(6), 1031-1073.
a. Let the eighth district be the control group and the sixth district be the treatment group. Construct
(a) una figure similar to Figure 7.3 using the four observations rather than sample means. Identify the
08 D 108
Isbor treatment effect on the figure.
to b. How many banks did each district lose during the crisis? Calculate the magnitude of the treatment
effect using (7.18) with these four observations, rather than sample means
f. The e-
a hou
(S.IT live in
home
7.9 Suppose
month) a
variable
7.13 a. Let
vari
om at & WE
b. Le
ch
brs vil Co
C
sa
Transcribed Image Text:mead 7 Using Indicator Variables TAB iv. State, in terms of the part (b) model parameters, the null hypothesis that the expected math score does not differ between boys and girls, against the alternative that there is a difference in expected math score for boys and girls. What test statistic would you use to carry out this test? What is the distribution of the test statistic assuming the null hypothesis is true, if N = 1200? What is the rejection region for a 5% test? 7.7 Can monetary policy reduce the impact of a severe recession? A natural experiment is provided by the State of Mississippi. In December of 1930, there were a series of bank failures in the southern 1o o United States. The central portion of Mississippi falls into two Federal Reserve Districts: the sixth b(Atlanta Fed) and the eighth (St. Louis Fed). The Atlanta Fed offered "easy money" to banks while to the St. Louis Fed did not. On July 1, 1930 (just before the crisis), there were 105 State Charter banks in Mississippi in the sixth district and 154 banks in the eighth district. On July 1, 1931 (just after and the crisis), there were 96 banks remaining in the sixth district and 126 in the eighth district. These dah data values are from Table 1, Gary Richardson and William Troost (2009) "Monetary Intervention Mitigated Banking Panics during the Great Depression: Quasi-Experimental Evidence from a Federal Bal Reserve District Border, 1929-1933," Journal of Political Economy, 117(6), 1031-1073. a. Let the eighth district be the control group and the sixth district be the treatment group. Construct (a) una figure similar to Figure 7.3 using the four observations rather than sample means. Identify the 08 D 108 Isbor treatment effect on the figure. to b. How many banks did each district lose during the crisis? Calculate the magnitude of the treatment effect using (7.18) with these four observations, rather than sample means f. The e- a hou (S.IT live in home 7.9 Suppose month) a variable 7.13 a. Let vari om at & WE b. Le ch brs vil Co C sa
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