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11.4 Exercise 3

Avg difficulty 2.5

Both before and after a recent earthquake, surveys were conducted asking voters which of the three candidates they planned on voting for in the upcoming city council election. Has there been a change since the earthquake? Use a level of significance of 0.05. the table shows the results of the survey. Has there been a change in the distribution of voter preferences since the earthquake?

Perez Chung Stevens
Before 167 128 135
After 214 197 225

OpenStax Introductory Statistics 2e, 11.4 Test for Homogeneity, exercise 3

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Adapted from Introductory Statistics 2e © 2023 Rice University. Licensed under CC BY 4.0. Source: Introductory Statistics 2e. Imported at revision 50ec917.