Question
In: Statistics and Probability
An insurance company checks police records of 549 accidents and finds that teenagers were at the...
An insurance company checks police records of 549 accidents and finds that teenagers were at the wheels in 87 accidents.
At a confidence level of 92%, calculate the margin of error in the estimated proportion of all auto accidents that involve teenagers.
four decimals.
Solutions
orchestra answered 1 year agoRelated Solutions
An insurance company checks police records of 500 accidents and finds that teenagers were at the...
An insurance company checks police records of 500 accidents and
finds that teenagers were at the wheels in 87 accidents.
Assume that the true population proportion of accidents with
teen-agers at the wheels is : p = 0.20.
Estimate the probability that the sample proportion of teen age
drivers in this population is no more than the observed proportion
of auto accidents that involve teenagers.
Use the simulated data on phat ( "phat.rda") from 5000 simulations
under the null hypothesis:...
An insurance company checks police records on 1000 accidents selected at random and finds that teenagers...
An insurance company checks police records on 1000
accidents selected at random and finds that teenagers were at the
wheel for 225 of them.
An insurance company checks police records of 582 accidents selected at random and finds that teenagers...
An insurance company checks police records of 582 accidents
selected at random and finds that teenagers were at the wheel in 91
of them.
a) Develop a 95% confidence interval for the percentage of all
auto accidents that involve
teenage drivers. Give an interpretation of this interval
b) A state insurance regulator claims that one of every five
auto accidents involves a teenage
driver. Does your confidence interval of part (a) support or
contradict this regulator’s claim?
Explain.
c) If...
An insurance company checks police records on 599 accidents selected at random and notes that teenagers...
An insurance company checks police records on 599 accidents
selected at random and notes that teenagers were at the wheel in 94
of them. Complete parts a) through d). a) Construct the 95%
confidence interval for the percentage of all auto accidents that
involve teenage drivers.
An insurance company checks police records on 556 accidents selected at random and notes that teenagers...
An insurance company checks police records on 556 accidents
selected at random and notes that teenagers were at the wheel in 91
of them. Complete parts
a) Construct the 95% confidence interval for the percentage of
all auto accidents that involve teenage drivers.
An insurance company checks police records on 571 accidents selected at random and notes that teenagers...
An insurance company checks police records on 571 accidents
selected at random and notes that teenagers were at the wheel in 91
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% Cl= (____%, ____%)
(Round to one decimal place as needed.)
An insurance company checks police records on 556 accidents selected at random and notes that teenagers...
An insurance company checks police records on 556 accidents
selected at random and notes that teenagers were at the wheel in 82
of them. Complete parts a) through d)
a) Construct the 95% confidence interval for the percentage of
all auto accidents that involve teenage drivers. (Round to one
decimal place as needed.)
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...
An insurance company checks police records on 557 accidents selected at random and notes that teenagers...
An insurance company checks police records on 557 accidents
selected at random and notes that teenagers were at the wheel in 88
of them.
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. A. We are 95% confident that the true percentage of
accidents involving teenagers falls inside the confidence interval
limits. B. We...
An insurance company checks police records on 591 accidents selected at random and notes that teenagers...
An insurance company checks police records on 591 accidents
selected at random and notes that teenagers were at the wheel in 85
of them. Complete parts a) through d).
A) creat a 95% confidence interval for the percentage of all
auto accidents that involve teenage drivers.
B) explain what your intervals mean
C) explain what 95% condifence means.
D) a politican urging tighter restrictions on drivers licenses
issued to teens says, "In one of every five auto accidents, a
teenager...
An insurance company checks police records on 559 accidents selected at random and notes that teenagers...
An insurance company checks police records on 559 accidents
selected at random and notes that teenagers were at the wheel in 82
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.
We are 95% confident that a randomly sampled accident would
involve a...
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