Introduction To Statistics And Data Analysis
6th Edition
ISBN: 9781337793612
Author: PECK, Roxy.
Publisher: Cengage Learning,
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Textbook Question
Chapter 9.3, Problem 46E
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 driving simulator where they were following a lead car. The drivers were asked to carry out a conversation while driving, and the following distance (the distance between the taxi and the lead car) was recorded. The sample
- a. Construct and interpret a 95% confidence interval for μ, the population mean following distance while talking on a mobile phone for the population of taxi drivers.
- b. What assumption must be made to generalize this confidence interval to the population of all taxi drivers in Greece?
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A study by a reputable research group captured multitasking activities of adults who use different devices while watching TV. The study reported that 320 of 442 (72%) smartphone users sampled, 192 of 350 (55%)computer users sampled, and 139 of 260 (53%) tablet users sampled used their device to check social media unrelated to the video content while watching TV. Complete parts (a) through (c) below.
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Chapter 9 Solutions
Introduction To Statistics And Data Analysis
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