13-18. Recently married couples were asked (independently of each other) to specify (under ideal circumstances) the number of years they would like to wait before having children:

Couple Wife Husband 1 0 2 2 0 1 3 1 1 4 0 2 5 1 2 6 2 2 7 1 3 8 3 1 9 1 2 10 0 1 Use the sign test for paired comparisons to determine if these couples have different propensities to wait for children. Let α = 0.05.