14. A study compares the inean level of contributions to political campaigns in Pennsylvania by registered Democrats,
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14. A study compares the inean level of contributions to political campaigns in Pennsylvania by registered Democrats, registered Republicans, and unaffiliated voters
a) Write a regression equation for this analysis, and interpret the parameters in the inodel.
b) Explain how one can use the regression model to test the null hypothesis of equal mean contributions for the three groups.
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Related Book For
Statistical Methods For The Social Sciences
ISBN: 9780135265260
3rd Edition
Authors: Alan Agresti, Barbara Finlay
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