Calculate a one-sample chi-square for the following set of observed
values addressing the null hypothesis that the parties are equally represented:
This test is a goodness of fit test. Does the data fit the idea that the parties are equally represented?
The level of significance is .05.
Political Party
	Democrat	Republican	Independent	Green
25 32 10 17 The problem gives you the observed results, or the O in this equation.
Now calculate the expected results by finding the mean	What is the mean?
Put the mean under the observed results in the table:	Democrat	Republican	Independent	Green
Subtract the expected results from the observed results:	Democrat	Republican	Independent	Green
Square the results:
Divide by the expected result in each case:
6 step hypothesis testing for this problem.
Step one:	What is the null hypothesis?
	What is the alternative hypothesis?
Step two:	What is the level of significance?
Step three:	Choose which test to use?
Step four:	What is the critical value? Use = CHISQ.INV(.05, 3)
Step five:	What is the test statistic that you computed?
Step six:	Compare the numbers and come to a conclusion.