After you have selected the right sample size and ran the A/B test, this step involves evaluation of the tests results and selection of the winning variant, if any.
Now that you have understood how to choose your sample size, confidence level, error, and conversion rate; you can start testing various components of your message one by one. This will help you find an optimal message for your campaign. Check the CleverTap website
to find more about A/B testing for push notifications.