Question: Birth order. Is your birth order related to your choice of major? A Statistics professor at a large university polled his students to find out what their majors were and what position they held in the family birth order. The results are summarized in the table.
a) What percent of these students are oldest or only children?
b) What percent of Humanities majors are oldest children?
c) What percent of oldest children are Humanities students?
d) What percent of the students are oldest children majoring in the Humanities?
Major 1 2 3 4+ Total
Math/Science 34 14 6 3 57
Agriculture 52 27 5 9 93
Humanities 15 17 8 3 43
Other 12 11 1 6 30
Total 113 69 20 21 223
*1 = oldest or only child