You are evaluating a change to the Answers feed and want to know whether the observed metric movement is meaningful enough to act on. In a 2-week experiment, the control saw 240,000 feed sessions with 31,200 answer clicks, while the treatment saw 238,000 feed sessions with 31,892 answer clicks. Assume you care about Answer click-through rate as the primary metric and will use a 5% significance level.
Is the observed change in Answer CTR statistically and practically meaningful enough to justify rolling out the treatment?