When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. $$\begin{array} { l l }
\text { Do you support } & \text { Number of } \
\text { capital punishment? } & \text { individuals } \
\text { Yes } & 40 \
\text { No } & 60 \
\text { No Opinion } & 50
\end{array}$$ We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The number of degrees of freedom associated with this problem is
A) 150.
B) 149.
C) 2.
D) 3.

Question

When individuals in a sample of 150 were asked whether or not they supported capital punishment, the following information was obtained. $$\begin{array} { l l } 
\text { Do you support } & \text { Number of } \
\text { capital punishment? } & \text { individuals } \
\text { Yes } & 40 \
\text { No } & 60 \
\text { No Opinion } & 50
\end{array}$$   We are interested in determining whether or not the opinions of the individuals (as to Yes, No, and No Opinion) are uniformly distributed.The number of degrees of freedom associated with this problem is
A) 150.
B) 149.
C) 2.
D) 3.

Quizplus · Accepted Answer

The degrees of freedom for a chi-square test for uniform distribution is calculated as the number of categories minus one. Here, there are 3 categories (Yes, No, No Opinion), so the degrees of freedom is 3 - 1 = 2.

When Individuals in a Sample of 150 Were Asked Whether