26. Recently the General Social Survey asked respondents. "Compared with ten years ago. would you say that American children today arc (1) much better off, (2) better off, (3) about the same. (4) worse off, oi (5) much worse off" Table 12.35 shows responses for ten of the subjects on three issues: quality of their education, safety of the neighborhoods they live in. and getting health care when they need it.

a) Test the hypothesis that the true means are equal. Report the P-value, and interpret.

b) Use a multiple comparison method to construct simultaneous 94% confidence inter- vals for differences between pairs of means.

c) For each of the following, indicate whether it is a fixed effect, random effect. or re- sponse variable (i) opinion. (u) issue, (ni) subject