Hi Rick,
May I ask what should I do if the bias is too large and the range of bootstrap values never contains the true value? When I apply BCa method, the upper percentile is always 100% (i.e. alpha2=1) and thus the results are bad. What would you recommend to improve on this?
Also, for bootstrap-t interval, do you think it considers the bias automatically just like BCa since it takes the z score to be bootstrap value - empirical value? Then both methods will have the same order of accuracy.

Thank you in advance!