Costa-Gravis Energy is testing the political climate for building a new oil refining facility in three north central states: North Dakota, South Dakota and Minnesota.The company has randomly selected a sample of 100 registered voters in each state to determine the proportion of state voters who would strongly oppose the construction.In the North Dakota sample, the proportion strongly opposing construction turns out to be 0.26; in the South Dakota sample, the proportion is 0.17; and in the Minnesota sample, it is 0.28. You use the chi-square distribution to test the hypothesis that the proportion of all voters who would strongly oppose construction is the same across the three states.What is the value of the chi-square test statistic?
A)3.80
B)5.22
C)6.87
D)4.21

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The Answer of Costa-Gravis Energy is testing the political climate for building a new oil refining facility in three north central states: North Dakota, South Dakota and Minnesota.The company has randomly selected a sample of 100 registered voters in each state to determine the proportion of state voters who would strongly oppose the construction.In the North Dakota sample, the proportion strongly opposing construction turns out to be 0.26; in the South Dakota sample, the proportion is 0.17; and in the Minnesota sample, it is 0.28. You use the chi-square distribution to test the hypothesis that the proportion of all voters who would strongly oppose construction is the same across the three states.What is the value of the chi-square test statistic?
A)3.80
B)5.22
C)6.87
D)4.21

Costa-Gravis Energy Is Testing the Political Climate for Building a New