An insurance company checks police records on 562 accidents selected at random and notes that teenagers were at the wheel in 81 of them. Complete parts a) through d).
a) Construct the 95% confidence interval for the percentage of all auto accidents that involve teenage drivers.
95% CI = ( ___________ %, _________ % )
(Round to one decimal place as needed.)
b) Explain what your interval means.
c) Explain what "95% confidence" means.
About 95% of random samples of size 562 will produce (1) __________ that contain(s) the
(2) _________ of accidents involving teenagers.
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 the confidence interval support or contradict this statement?
Please show all of the math. Thank you!
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