Spring 2010 Midterm 1 Review Slides

# Whether your test statistic is in the rejection

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Unformatted text preview: ejection Region or not. p value ? 5 Statistical Inference Types of Test Exercises One-Population Mean Two-Population Mean One-Population Variance Two-Population Variances More-than-two-Population Means One-Population Mean test df statistic width CI Pop variance is KNOWN Z-test NO d f Z Z X X n Pop variance is UNKNOWN t-test df t t X n X S S n n Proportion, p Z-test NO d f Z Z 2 pp p1 p p1 p n n 1 2 n 2 width width p width 6 Statistical Inference Types of Test Exercises One-Population Mean Two-Population Mean One-Population Variance Two-Population Variances More-than-two-Population Means Two-Population Mean Pop variance is KNOWN test df Z-test NO d f X1 X2 2 1 n1 2 1 Pop variance is UNKNOWN equal var unequal var t-test t-test df X1 n1 X2 n2 2 df 2 S1 n1 2n 2 S 11 n1 1 2 S2 n2 2 2 S 2 n2 2 n2 1 1 S2 2 n2 2 S2 n2 2 statistic Z 1 2 2 n2 2 2 2 t 1 1 n2 2 2 Sp n1 1 t X1 X2 S2 1 n1 2 S1 n1 width CI Z X1 2 n1 n2 t 2 2 Sp 1 n1 1 n2 t X1 2 X2 width 2 Sp X1 n1 X2 width X2 width 2 2 1 S1 n2 1 S2 n1 n2 2 7 Statistical Inference Types of Test Exercises One-Population Mean Two-Population Mean One-Population Variance Two-Population Variances More-than-two-Population Means Tw...
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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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