Question: Calculate the 90 percent confidence interval for the following variables, comparing lower, work­ing, middle, and upper classes (CLASS) in the GSS sample. First, tell SPSS that we want to select all cases in the sample by selecting Data and then All Cases, and then OK. Then use the Explore procedure using CLASS as your factor variable (Analyze, Descriptive Statistics, Explore) Make a summary statement of your findings.

(a) CHILDS (Number of children in the household)

(b) EDUC (Respondent's highest year of school completed)

(c) PAEDUC (Father's highest year of school completed)

(d) PRESG80 (Respondent's occupational prestige)

(e) MAEDUC (Mother's highest year of school completed)