BU.232.620 (Linear Econometrics for Finance)
Homework 1
线性计量经济学代写 Different students may have different characteristics that are idiosyncratic in affecting their final exam scores.
1.Q3.6 线性计量经济学代写
(a)As the p-value is equal to 3%, the value µ=5 it outside of the confidence interval of 97% and hence 95%.
(b)Icannot determine whether µ=6 is contained in the 95% confidence interval, be- cause the there is insufficient information to compute the t-ratio related to µ=6.
2. Q3.7
There are two potential interpretations of the question. The first interpretation is that 11% is the fraction in the ”given population™, while the second is that 11% is the conjectured value to test. There are two solutions, depending on the interpretations (Iwanted to go with the first one, but find that the question has a bit of ambiguity so would be okay if you go with the second interpretation).
3.Q4.5 线性计量经济学代写
(a)The term usrepresent the regression error. Different students may have different characteristics that are idiosyncratic in affecting their final exam scores.
(b)Thefact that each student is randomly assigned into each of the two groups.
(c)The random assignment also ensures The no outlier condition is satisfied by the fact that the final exam score is a bounded randomvariable. 线性计量经济学代写
(d)-i: For 9O minutes, Y^ = 49 + 0.24*90, for 120 minutes, Y^ = 49 + 0.24 *120, and for 150 minutes, Y = 49 + 1.24 * 150
(d)-ii: The estimated gain for an additional 10 minutes is O.24*10=2.4
4.Q5.5 线性计量经济学代写
(a)Small classes improve test scores significantly, by 13.9. The effect is not large as 13.9/925 and the RX is only 1%.
(b)Yes,it is significant. The t-static is equal to 13.9/2.5 larger than 1.96.
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