Answered You can hire a professional tutor to get the answer.
Reconsider Exercise 2.13, which was based on the experiment with small classes for primary school students conducted in Tennessee beginning in 1985.
Reconsider Exercise 2.13, which was based on the experiment with small classes for primary school students conducted in Tennessee beginning in 1985. Data for the kindergarten classes is contained in the data file star.dat. (a) Using children who are in either a regular-sized class or a small class, estimatethe regression model explaining students' combined aptitude scores as a function of class size, TOTALSCORE = 131 + I32SMALL +e. Test the null hypothesis that 13z is zero, or negative, against the alternative that this coefficient is positive. Usethe5%levelofsignificance.Computethep-value ofthistest,andshowits value in a sketch. Discuss the social importance of this finding.(b) For the model in part (a), construct a 95% interval estimate of !32 and discuss. (c) Repeatpart(a)usingdependentvariablesREADSCORE andMATHSCORE.Doyou observe any differences? (d) Usingchildrenwhoareineitheraregular-sizedclassoraregular-sizedclasswitha teacher aide, estimate the regression model explaining students' combined aptitude scores as a function of the presence or absence of a teacher aide, TOTALSCORE = 'YI +'Y2AIDE +e. Test the null hypothesis that 'Yz is zero or negative against the alternative that this coefficient is positive. Use the 5% level of significance. Discuss the importance of this finding.(e) For the model in part (d), construct a 95% interval estimate of 'Yz and discuss. (f) Repeat part (d) using dependent variables'READSCORE and MATHSCORE.Do you observe any differences?
