Refer to Example 9.14. Is there evidence of a difference in the proportions favoring the proposal for the two sections of the city?

1. Select Stat ➤ Basic Statistics ➤ 2 Proportions, select Summarized data in the top drop-down list, and enter the values for n1, n2, x1, and x2 in the appropriate boxes.

2. In the Options dialog box, make sure that alternative hypothesis is two-tailed, set the

“Hypothesized difference” to 0 and choose “Use the pooled estimate of the proportion” in the Test method drop-down list (Figure 9.17(a)). Click OK twice to obtain the output—

z 5 1.37 with p-value 5 0.171—shown in Figure 9.17(b). The results are not significant. There is no evidence that the citizens in the developing section have a different opinion than those in the rest of the city.