4. The General Social Survey regularly asks individuals to
disclose their religious affiliation. The following data
represent the religious affiliation of young adults, aged 18 to
29, in the 1970s, 1980s, 1990s, and 2000s. Do the data suggest
different proportions of 18- to 29-year-olds have been
affiliated with religion in the past four decades? Use the
a=0.05 level of significance.


Answer :