死亡率をフィッシャーテストで検定しても有意差なし
> Fisher.test(c(17,24),c(742,738)) # mortality

Fisher's Exact Test for Count Data

data: cbind(hit, shot - hit)
p-value = 0.2721
alternative hypothesis: true odds ratio is not equal to 1
95 percent confidence interval:
0.3486086 1.3673720
sample estimates:
odds ratio
0.6977583