TABLE 12-20
Data on the Percentage of 200 Hotels in Each

TABLE 12-20
Data on the percentage of 200 hotels in each of the three large cities across the world on whether minibar charges are correctly posted at checkout are given below.
$\begin{array}{cccc} \hline& \text { Hong Kong } & \text { New York } & \text { Paris } \\\hline\text { Yes } & 86 \% & 76 \% & 78 \% \\\text { No } & 14 \% & 24 \% & 22 \%\\\hline\end{array}$
At the 0.05 level of significance, you want to know if there is evidence of a difference in the proportion of hotels that correctly post minibar charges among the three cities.
-Referring to Table 12-20, the test will involve______ degrees of freedom.