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.
$$\begin{array} { c c c c }
\hline& \text { Hong Kong } & \text { New York } & \text { Paris } \
\hline\text { Yes } & 86 \% & 76 \% & 78 \% \
\text { No } & 14 \% & 24 \% & 22 \% \
\hline
\end{array}$$ 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 null hypothesis will be rejected.

Question

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.
 $$\begin{array} { c c c c } 
\hline& \text { Hong Kong } & \text { New York } & \text { Paris } \
\hline\text { Yes } & 86 \% & 76 \% & 78 \% \
\text { No } & 14 \% & 24 \% & 22 \% \
\hline
\end{array}$$ 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 null hypothesis will be rejected.

Quizplus · Accepted Answer

The null hypothesis states that there is no difference in the proportion of hotels that correctly post minibar charges among the three cities. The alternative hypothesis states that there is a difference. The chi-square test statistic is calculated to be 10.24, with 2 degrees of freedom. The p-value is 0.006, which is less than the significance level of 0.05. Therefore, the null hypothesis is rejected and we conclude that there is evidence of a difference in the proportion of hotels that correctly post minibar charges among the three cities.

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

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