selection effects. We see no statistically significant differences between the radial distributions of Type Ia and CC SNe in all the subsamples of Sa–Sm galaxies. In contrast, the cumulative radial distributions of SNe Ia in S0–S0/a and Sa–Sm galaxies apparently deviate from one another (as seen in the AD statistic but only very marginally so in the KS statistic). Fig. \[hist\_distr\], indeed shows signs of a bimodal radial distribution for SNe Ia in S0–S0/a galaxies.

\[SNeIaCC\_KS\_AD\]

  ------------------------------------------ -------- ----------------------------------------- ---- ---- ------- ------- -- ----- ----- ------- -------
                                                                                                                                                 
                                                                                                                                                 
  $0 < D {\rm (Mpc)} \leq 60$ (S0–S0/a)       versus  $60 < D {\rm (Mpc)} \leq 100$ (S0–S0/a)     10   18  0.566   0.416         0     1    –       –
  $0 < D {\rm (Mpc)} \leq 60$ (Sa–Sm)         versus  $60 < D {\rm (Mpc)} \leq 100$ (Sa–Sm)       69   83  0.692   0.620       168   151  0.683   0.465
  $0^\circ \leq i \leq 40^\circ$ (S0–S0/a)    versus  $40^\circ < i \leq 60^\circ$ (S0–S0/a)      11   17  0.973   0.883         0     1    –       –
  $0^\circ \leq i \leq 40^\circ$ (Sa–Sm)      versus  $40^\circ < i \leq 60^\circ$ (Sa–Sm)        64   88  0.190   0.412       134   185  0.938   0.821
  $t \leq 2000 \, {\rm yr}$ (S0–S0/a)         versus  $t > 2000 \, {\rm yr}$ (S0–S0/a)             6   22  0.348   0.560         0     