Table 3.18 shows reported happiness for those subjects in the 2014 GSS who attend religious services rarely and for those who attend frequently.

(a) Identify the response variable and the explanatory variable.

(b) At each level of religious attendance, find the percentage who reported being very happy.

(c) Does there seem to be an association between these variables?Why?

TABLE 3.18 Religious Happiness Attendance Very Happy Pretty Happy Not Too Happy Total At least once a week 247 287 67 601 No more than once a year 298 723 165 1186