TABLE 12-7
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.

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 12-7, there is sufficient evidence to conclude that the proportions between Hong Kong and New York are different at a 0.05 level of significance.

Question

TABLE 12-7
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.
  
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 12-7, there is sufficient evidence to conclude that the proportions between Hong Kong and New York are different at a 0.05 level of significance.

Quizplus · Accepted Answer

We cannot draw a conclusion about the proportions between all three cities, as the data only gives us information about each city's proportion compared to the others. However, based on the data given, we can conduct a 2-sample test for proportions between Hong Kong and New York. If the calculated p-value is less than 0.05, we can reject the null hypothesis and conclude that there is evidence of a difference in proportions between Hong Kong and New York. Therefore, the statement is true.

TABLE 12-7 Data on the Percentage of 200 Hotels in Each of Each