Spring 2010 Midterm 1 Review Slides

# Then h1 1 2 the null hypothesis h0 is always the

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Unformatted text preview: 2 The Null Hypothesis, H0 , is ALWAYS the complement of H1 Is 1 2? Then H0 1 2 or H0 1 2 3 Statistical Inference Types of Test Exercises Distributions Hypotheses Critical Statistic Null and Alternative Hypotheses Question 0? 0? 0? 10? 10? 10? 1 1 1 2 1 2 1 2 1 2? 2? 2? 2 2? 2 2? 2 2? 2 1 2 1 2 1 1 1 1 2 2 2 2 2 2 H1 0 0 0 10 10 10 2 2 2 1 1 H0 0 or 0 or 0 10 or 10 or 10 2 2 1 Point Estimate 0 0 10 10 X1 X1 X1 2 S1 2 S1 Rejection Region upper tail lower tail upper and lower tails upper tail lower tail upper and lower tails X X X X X X 2 2 or or 1 1 2 X2 X2 X2 2 S2 2 S2 upper tail lower tail upper and lower tails upper tail lower tail upper and lower tails 1 1 1 2 1 2 1 2 2 2 2 2 1 1 or 1 or 2 2 1 1 2 2 S1 S2 1 4 Statistical Inference Types of Test Exercises Distributions Hypotheses Critical Statistic Critical Statistic and Test Statistic They are not the same thing Test Statistic and p-values are given by the data that you have and depend on the hypothesized value Critical Statistics are FIXED, they only depend on degrees of freedom, d f , and signiﬁcance level, they deﬁne the Rejection Region Then you have to check whether your Test Statistic is in the R...
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## This note was uploaded on 02/14/2011 for the course ECON 203 taught by Professor Petry during the Spring '09 term at University of Illinois, Urbana Champaign.

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