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

question 3

Multiple Choice

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 each customer at intervals of 20 (9,29,49,etc.) . His sample is a __________.

• A) convenience sample
• B) simple random sample
• C) unsystematic sample
• D) stratified sample
• E) systematic sample

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Definitions:

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Planetary Scientists

Researchers who study planets, moons, and planetary systems, particularly those of the Solar System and the processes that form them.

Thick Clouds

Dense accumulations of water droplets or ice crystals in the atmosphere, often resulting in reduced visibility and precipitation.

Toxic Gases

Harmful gases that can cause detrimental health effects or death upon exposure, commonly found in industrial, volcanic, or decomposing organic contexts.