12.74 (M3, M4, M5, P1) Jaups The authors of the paper "Driving Performance While Using a Mobile Phone: A Simulation Study of Greek Professional Drivers" (Transportation Research Part F [2016]: 164–170) describe a study to evaluate the effect of mobile phone use by taxi drivers in Greece. Fifty taxi drivers drove in a driv- ing simulator where they were following a lead car. The drivers were asked to carry on a conversation on a mobile phone while driving, and the following distance (the distance between the taxi and the lead car) was recorded. The sample mean following distance was 3.20 meters and the sample standard deviation was 1.11 meters. a. Construct and interpret a 95% confidence interval for u, the population mean following distance while talking on a mobile phone for the population of taxi drivers. b. What assumption must be made in order to generalize this confidence interval to the population of all taxi driv- adi ers in Greece?

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12.74 (M3, M4, M5, P1) Jaups
The authors of the paper "Driving Performance While Using
a Mobile Phone: A Simulation Study of Greek Professional
Drivers" (Transportation Research Part F [2016]: 164–170)
describe a study to evaluate the effect of mobile phone use
by taxi drivers in Greece. Fifty taxi drivers drove in a driv-
ing simulator where they were following a lead car. The
drivers were asked to carry on a conversation on a mobile
phone while driving, and the following distance (the distance
between the taxi and the lead car) was recorded. The sample
mean following distance was 3.20 meters and the sample
standard deviation was 1.11 meters.
a. Construct and interpret a 95% confidence interval for u,
the population mean following distance while talking on
a mobile phone for the population of taxi drivers.
b. What assumption must be made in order to generalize
this confidence interval to the population of all taxi driv-
adi ers in Greece?
Transcribed Image Text:12.74 (M3, M4, M5, P1) Jaups The authors of the paper "Driving Performance While Using a Mobile Phone: A Simulation Study of Greek Professional Drivers" (Transportation Research Part F [2016]: 164–170) describe a study to evaluate the effect of mobile phone use by taxi drivers in Greece. Fifty taxi drivers drove in a driv- ing simulator where they were following a lead car. The drivers were asked to carry on a conversation on a mobile phone while driving, and the following distance (the distance between the taxi and the lead car) was recorded. The sample mean following distance was 3.20 meters and the sample standard deviation was 1.11 meters. a. Construct and interpret a 95% confidence interval for u, the population mean following distance while talking on a mobile phone for the population of taxi drivers. b. What assumption must be made in order to generalize this confidence interval to the population of all taxi driv- adi ers in Greece?
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