section_problems_13_spring10-1

section_problems_13_spring10-1 - Section Problems #13 Note...

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Section Problems #13 Note that there are four problems on this problem set. #1) estScore T ˆ = 690 - 4.1 * STR n= 600 (12.2) (1.9) a) In the regression above, robust standard errors appear in parentheses. Calculate the test statistic for the test of H 0 : β 1 = 0 against the two-sided alternative H a : β 1 0? Round your final answer to two decimal places if necessary. b) What is the P-value for this test? Calculate the P-value using the standard normal table. Use your final answer from part a. Round your answer to four decimal places. c) Do you reject the null hypothesis at the 5% level? #2) estScore T ˆ = 700 - 3.2 * STR n= 800 (13) (1.8) a) In the regression above, robust standard errors appear in parentheses. Construct a 99% confidence interval for the predicted effect on test scores of reducing the student teacher ratio by 2. Use a z* value that refers to the standard normal distribution. Round your final answers to two decimal places if necessary. b) Construct a 95% confidence interval for β
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section_problems_13_spring10-1 - Section Problems #13 Note...

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