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 decision made suggests that the three cities do not all have the same proportion of hotels that correctly post minibar charges.

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 decision made suggests that the three cities do not all have the same proportion of hotels that correctly post minibar charges.

Quizplus · Accepted Answer

This is because the instruction states that we want to test if there is a difference in the proportion of hotels that correctly post minibar charges among the three cities at the 0.05 level of significance. If the test results in rejecting the null hypothesis, which assumes no difference in proportions, then it suggests that there is evidence of a difference. Therefore, if the decision is to reject the null hypothesis, then the answer would be A (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