Propeller Health $($propellerhealth$.$com$)$ offers a digital health platform designed to simplify chronic respiratory disease management, connecting patients and caregivers through remote monitoring and real$-$time adherence tools. Propeller's Bluetooth$-$enabled sensors attach to patients$’$ existing inhalers and deliver insights on medication use via the Propeller app on their smartphones, which patients can then share with their clinician to help inform their treatment plan.

A market research firm has been hired by Propeller Health to evaluate the market potential of their product by administering a survey. The researchers plan to approach a random sample of pulmonary doctors $($i$.$e$.,$ doctors who deal with respiratory diseases$)$ to complete the survey, with a goal of sampling ten doctors per state. The sampling frame is a directory of licensed pulmonologists in the U$.$S$.$ provided by the American Medical Association.