Target power is 0.95 for every hypothesis test, and the simulation reruns at it¶

Audit item 8. 0.928 was 0.80 joint over three independent cells, a target of our own making that no longer describes the admitted set. Replaced by the registered-report standard: "For frequentist analysis plans, the a priori power must be 0.95 or higher for all proposed hypothesis tests" (Nature Communications / Nature Human Behaviour Registered Reports author guidelines, read from the guidelines PDF). The hypothesis tests are H1 and H2, not their cells. H1 passes only when every admitted organization's cell is supported (intersection-union), and the organizations are independent, so H1's power is the product of its cells' powers: with k cells each needs 0.95^(1/k), 0.9747 at two and 0.9830 at three. The admitted set is fixed at Stage 1 submission, so the simulation finds the bound for each of one to three cells, and the design reads the one matching the set it registers.

The same guidelines ask for outcome-neutral tests, positive controls among them, that are "sufficient for ensuring that the results obtained are able to test the stated hypotheses". They do not state a power figure for a positive control; a control that would fail a working apparatus about half the time (audit item 5) is not sufficient under that wording, which is why the planted-convention check's pass rate is measured before it is registered.

partition_sensitivity.py moves with it: --hypothesis-power 0.95 and --cells 1 2 3, each cell's power derived as above, a bound per level and cell count (by_cells, which sensitivity_bounds and partition_pilot.py --h1-cells read); --trials 1000 per bisection step (Monte Carlo error about 0.007 near 0.95 and 0.004 near 0.983, against 0.015 at 300), --steps 10 (lift resolved to 0.0003; at seven steps, 0.0023, several points of the previous run read identical bounds). It reruns once on TIGRIS on the twelve-month projection (2,018 changes). The registered bounds, the Stage 1 sample-size paragraph and registered-decisions.md take their figures from that artifact.