A large random sample of customers who regularly use curbside pick up and an independent larger random sample of customers who regularly use home delivery services are collected. For each customer, whether or not the customer tipped the service worker will be recorded. This data will be used to estimate the difference in tipping rates when customers use curbside pick up versus when customers use home delivery service.
Hypothesis Test
Confidence Interval
p
p1 - p2
μ
μ1 - μ2