Midterm2review (1).pdf - STAT324 Midterm 2(L8-L18 Review...

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STAT324 Midterm 2 (L8-L18) Review1 / 6
AnnouncementsThis week’s office hours: 2-4pm Wednesday at R1475 MSC.This week’s discussion: TAs will go through the practice problems6 big problems:Problem 1-3: several MC. Either circle theBESTanswer or circleALLcorrect answers.Problem 4-6: Show all your work.2 / 6
Review of Chapter 5What is t distribution? What is the shape of t distribution?How can we characterize a specific t distribution? Which parameterdo we use?How can we use t table?What is the distribution of¯X-μS/nwhere¯X=1nni=1Xi,XiN(μ, σ2) i.i.d. andSis the sample standard deviation.3 / 6
Review of Chapter 5How can we interpret a 95% confidence interval?How can we build a confidence interval forμwhenσis known andσis unknown?How can we determine the required sample size to achieve certainconfidence level?What is the approximate distribution of sample proportion?How can we make a confidence interval for population proportion?What is the assumption we need to check?What is the idea of using Bootstrap method to build confidenceinterval?

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