Withthedataintheexamplein Section 5.4.5, conductandinterpretthePearsonchi-squared test

(a) comparingdivorced/separatedwithnevermarriedonhappiness;

(b) comparingmarried with divorced/separatedandnevermarriedcombined.(Thesumofthetwo X2 statistics, with df = 2 +2 = 4, approximatelyequals X2 for thefulltableasanalyzedin Section 5.4.5, showing that chi-squaredstatisticsandtheir df valuespartition.)