On Saturdays, cars arrive at David Zebda's Scrub and Shine Car Wash at the rate of 80 cars per hour during the ten-hour shift.David wants a sample of 40 Saturday customers to answer the long version of his quality service questionnaire.He randomly selects 9 as a starting point and instructs the crew to select the 9th customer and every 20^th customer thereafter (9, 29, 49, etc.).His sample is a __________. A)convenience sample B)simple random sample C)unsystematic sample D)stratified sample E)systematic sample

Question

Quizplus · Accepted Answer

David's method of selecting every 20th customer starting with the 9th customer is a systematic sampling technique, which is a type of probability sampling where each member of the population is selected at regular intervals.

On Saturdays, Cars Arrive at David Zebda's Scrub and Shine