代写ECON2206 Introductory Econometrics Week 5 Tutorials代做Java语言
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Introductory Econometrics
Week 5 Tutorials
Readings
• Read Chapter 4.1-4.2 thoroughly.
Review Questions (these may or may not be discussed in tutorial classes)
• What is the null hypothesis about a parameter?
• What is a one-tailed (two-tailed) alternative hypothesis?
• In testing hypotheses, what is a Type I (Type II) error? What is the level of significance?
• The decision rule we use can be stated as “reject the null if the t-statistic exceeds the critical value”. How is the critical value determined?
• Justify the statement “Given the observed test statistic, the p-value is the smallest significant level at which the null hypothesis would be rejected.”
• What is the 90% confidence interval for a parameter?
• When the level of confidence increases, how would the width of the confidence interval change (holding other things fixed)?
• Try to convince yourself that the event “the 90% confidence interval covers a hypoth-esised value of the parameter” is the same as the event “the null of the parameter being the hypothesised value cannot be rejected in favour of the two-tailed alterna-tive at the 10% level of significance.”
• How would you test hypotheses about a single linear combination of parameters?
• What are restricted and unrestricted models?
• How do you compute the F-statistic, given that you have SSRs?
• What are general linear restrictions on parameters?
Problem Set (these will be discussed in tutorial classes)
• Ch4 Q2 - Compute the p-value of the test performed in part (iii) using the standard normal approximation to the student-t distribution.
• Ch4 Q5
• Ch4 Q6
