Interview Guides
You work on a customer experience team that wants to run an A/B test on a new support flow and measure whether it improves customer satisfaction. Leadership needs to know how many customers you need before launching the study, and you want the answer to be defensible.
How would you calculate the sample size needed for this customer satisfaction study? Walk through the assumptions you would make, the effect size you would target, and how you would turn that into a concrete number of customers per variant.
