Instruction 15-8
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.
$$\begin{array} { | c | c | c | c | }
\hline & \text { Hong Kong } & \text { New York } & \text { Paris } \
\hline \text { Yes } & 86 \% & 65 \% & 78 \% \
\text { No } & 14 \% & 24 \% & 22 \% \
\hline
\end{array}$$ 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 Instruction 15-8,the null hypothesis will be rejected.

Question

Instruction 15-8
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.
 $$\begin{array} { | c | c | c | c | } 
\hline & \text { Hong Kong } & \text { New York } & \text { Paris } \
\hline \text { Yes } & 86 \% & 65 \% & 78 \% \
\text { No } & 14 \% & 24 \% & 22 \% \
\hline
\end{array}$$ 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 Instruction 15-8,the null hypothesis will be rejected.

Quizplus · Accepted Answer

Since we want to test if there is a difference in proportions among the three cities, the null hypothesis would be that the proportions are equal. If we reject the null hypothesis, it means there is evidence of a difference in proportions, which is what we are looking for. Therefore, the statement is true.

Instruction 15-8 Data on the Percentage of 200 Hotels in Each

Instruction 15-8
Data on the Percentage of 200 Hotels in Each