Traffic Sofety: Here is a passage from a study published by the National Highway Traffic Safety Administration in 2007. The National Occupant Protection Use Survey (NOPUS) is the only probability-based survey of driver cell phone use in the United States. The sunvey observes usage as it actually occurs at a random selection of roadway sites, and so provides the best tracking of the extent to which people in this country are using cell phones whlle driving." NOPUS observed 43,000 drivers in this study. Which feature of the sampling plan makes the sample representative of the population? O The reputable organization conducting the study (the National Highway Traffic Safety Administration) O The random sclection of roadway sites O The large sample size of 43,000 drivers

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Traffic Sofety: Here is a passage from a study published by the National Highway Traffic
Safety Administration in 2007.
The National Occupant Protection Use Survey (NOPUS) is the only probability-based
survey of driver cell phone use in the United States. The sunvey observes usage as it
actually occurs at a random selection of roadway sites, and so provides the best tracking
of the extent to which people in this country are using cell phones whlle driving."
NOPUS observed 43,000 drivers in this study.
Which feature of the sampling plan makes the sample representative of the population?
O The reputable organization conducting the study (the National Highway Traffic Safety
Administration)
O The random sclection of roadway sites
O The large sample size of 43,000 drivers
Transcribed Image Text:Traffic Sofety: Here is a passage from a study published by the National Highway Traffic Safety Administration in 2007. The National Occupant Protection Use Survey (NOPUS) is the only probability-based survey of driver cell phone use in the United States. The sunvey observes usage as it actually occurs at a random selection of roadway sites, and so provides the best tracking of the extent to which people in this country are using cell phones whlle driving." NOPUS observed 43,000 drivers in this study. Which feature of the sampling plan makes the sample representative of the population? O The reputable organization conducting the study (the National Highway Traffic Safety Administration) O The random sclection of roadway sites O The large sample size of 43,000 drivers
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