Polling How accurate are pollsters in predicting the outcomes of Congressional elections? The table shows the actual
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Polling How accurate are pollsters in predicting the outcomes of Congressional elections? The table shows the actual number of Democrat seats in the House of Representatives and the number predicted by the Gallup organization for nonpresidential election years since World War II.
1. Is there a significant difference between the number of seats predicted for the Democrats and the number they actually held? Test an appropriate hypothesis and state your conclusions.
2. Is there a strong association between the pollsters’ predictions and the outcomes of the elections? Test an appropriate hypothesis and state your conclusions.
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1 H 0 The mean difference in the number of predicted Democrats and the number of ...View the full answer
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Related Book For 
Stats Data And Models
ISBN: 9780135163825
5th Edition
Authors: Richard D De Veaux, Paul F Velleman, David E Bock
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