Question: An insurance company checks police records on 582 accidents selected

An insurance company checks police records on 582 accidents selected at random and notes that teenagers were at the wheel in 91 of them.
a) Create a 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.
b) Explain what your interval means.
c) Explain what “95% confidence” means.
d) A politician urging tighter restrictions on drivers’ licenses issued to teens says, “In one of every five auto accidents, a teenager is behind the wheel.” Does your confidence interval support or contradict this statement? Explain.


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  • CreatedMay 14, 2015
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