Complete confidence calculator - Confidence that offer a is different

​@kani456 Use 95 as the standard cutoff.

If the "Confidence that Offer is different" ≥ 95 you can say the offer is statistically different from Offer A (equivalent to a 95% CI for the conversion-rate lift that does not include zero).

In your table:

• Offer B (81.09%) → not different.
• Offer C (93.13%) → not different at 95% (close, but still below the threshold).

Notes:

• You can choose a lower threshold (e.g., 90) for faster decisions, but that increases false positives.
• If you need a firm decision, run the test longer period or calculate required sample size to reach 95.