Studies have shown that drivers who use cell phones while operating a motor passenger vehicle increase their risk of an accident. To quantify this risk,
Studies have shown that drivers who use cell phones while operating a motor passenger vehicle increase their risk of an accident. To quantify this risk, the New England Journal of Medicine (January 2, 2014) reported on the risk of a crash (or near crash) for both novice and expert drivers when using a cell phone. In a sample of 371 cases of novices using a cell phone while driving, 24 resulted in a crash (or near crash). In a sample of 1,467 cases of experts using a cell phone while driving, 67 resulted in a crash (or near crash).
a. Give a point estimate of p, the true crash risk (probability) for novice drivers who use a cell phone while driving.
b. Find a 95% confidence interval for p.
c. Give a practical interpretation of the interval, part b.
d. Repeat parts a–c for expert drivers.
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a b For confidence coefficient 95 05 and 2 052 025 From Table II Appendix D z 025 196 The confidenc... View full answer
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Authors: James T. McClave, P. George Benson, Terry T Sincich
14th Edition
0136855350, 9780136855354
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