Data Set 11-7: as You May Know, There Has Been

Multiple Choice

Data Set 11-7: As you may know, there has been some controversy about who the actual author was of plays we today attribute to Shakespeare. Suppose that three critics gave their judgments as to the likelihood (0 to 100%) that each of the three named below was the actual author. $$\begin{array} { l c c c } & \begin{array} { c } \text { William } \\\text { Shakespeare }\end{array} & \begin{array} { c } \text { Christopher } \\\text { Marlow }\end{array} & \begin{array} { c } \text { The Duke } \\\text { of Oxford }\end{array} \\ \text { Critic Smythe } & 75 & 25 & 50 \\\text { Critic Jones } & 40 & 10 & 75 \\\text { Critic Jonson } & 90 & 30 & 20\end{array}$$
-Regardless of your answer to the questions above, the df_error for the numbers in Data Set 11-7 is

A) 8
B) 6
C) 3