The confidence intervals are not correct (see attached image). Also, when "Show confidence interval" is activated the node becomes very slow. The calculations of the confidence intervals took more than a minute and after executing the node it needed more than 16 seconds to re-open. Any changes in the node are much slower (e.g. "customize" or "Set optimal width"). Perhaps it is necessary to deactivate this option until there is a correct and faster solution.
I added Warning "Takes some Time" to the checkbox