http://i.imgur.com/OzyVI5r.png

Either does not reject falsely.

95%HDI accepts null hypothesis with smaller sample than 95%CI.

> mean(hdi[,1]>ROPE[1] & hdi[,2]<ROPE[2])
[1] 0.228
> mean(ci[,1]>ROPE[1] & ci[,2]<ROPE[2])
[1] 0.178