# 5 Working Couples A guidance counselor at a middle school collected the following information regarding the employment status of married couples within his school's boundaries. Number of Children under 18 Years Old Worked 0 2 or More Total Husband only 172 79 174 425 Wife only 94 17 15 126 Both spouses 522 257 370 1149 Total 788 353 559 1700 (a) What is the probability that, for a married couple selected at random, both spouses work? (b) What is the probability that, for a married couple selected at random, the couple has one child under the age of 18? (c) What is the probability that, for a married couple selected at random, the couple has two or more children under the age of 18 and both spouses work? (d) What is the probability that, for a married couple selected at random, the couple has no children or only the husband works? (e) Would it be unusual to select a married couple at random for which only the wife works