Slide 1Agenda Informationer –Uformel evaluering –2 spørgeskemaer + eval. Opsamling fra sidst –Variabel – def. og typer –Fordeling (distribution) –Centrumskøn…

1.Sampling Andrew Martin PS 372 University of Kentucky 2. What do polls tell us? 3. Population If we want to assess American support for competing presidential candidates,…

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1. Confidence Intervals 2. • Confidence interval: used to describe the amount of uncertainty associated with a sample estimate of a population parameter • How to interpret…

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1. Null-hypothesis for aSingle Sample Z-test forProportionsConceptual Explanation 2. With hypothesis testing we are setting up a null-hypothesis 3. With hypothesis testing…

1. Calculating a Two-Sample Z Test by Hand 2. Here is the problem you just saw in a previous presentation. Follow along doing the calculations on your own problem as you…

1. Chap 7-1Statistics for Business and Economics, 6e © 2007 Pearson Education, Inc.Chapter 7Sampling andSampling DistributionsStatistics forBusiness and Economics6thEdition…