A chi-square goodness-of-fit-test is being used to determine if the observed frequencies and expected frequencies from five categories are significantly different.If only one parameter is estimated from the data,what is the critical chi-square value associated with α = 0.05?
A)3.84
B)5.99
C)7.81
D)9.49

Question

Quizplus · Accepted Answer

The degrees of freedom for the test is calculated as the number of categories minus the number of estimated parameters minus one, which is 5 - 1 - 1 = 3. The critical chi-square value for 3 degrees of freedom at α = 0.05 is 7.81.

A Chi-Square Goodness-Of-Fit-Test Is Being Used to Determine If the Observed