Question

An insurance company checks police records on 565 accidents selected at random and notes that teenages were at the wheel in 81 of them. 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 is being the wheel" Does your confidence interval supprt or contradict this statement? explain.

Answer #1

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.
We are 95% confident that a randomly sampled accident would
involve a...

An insurance company checks police records on 573 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

An insurance company checks police records on 563 accidents
selected at random and notes that teenagers were at the wheel in 98
of them.
Question: Construct the 95% confidence interval for the
percentage of all auto accidents that involve teenage
drivers.
Answer: 95% CI= (____%,____%) (round to 1
decimal as needed.)

An insurance company checks police records on 596 accidents
selected at random and notes that teenagers were at the wheel at 87
of them. if we want to construct a 95% confidence interval for the
proportion of all auto accidents that involve teenage drivers, what
would be the standard error of the sample proportion of
successes?

An insurance company checks police records of 560 accidents
selected at random and found that teenagers were at the wheel in
18% of them. Construct a 95% confidence interval for the true
percentage of auto accidents that involve teenage drivers.
Interpret your results.

An insurance company checks police records on 573 accidents
selected at random and notes that teenagers were at the wheel in 83
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%
CIequals=left parenthesis nothing % comma nothing % right
parenthesis%,%
(Round to one decimal place as needed.)

1. A consumer advocacy group published a study of labeling of
seafood sold in three U.S. states. The study found that 13 of the
25 "red snapper" packages tested were a different kind of fish.
Assume that the study used a simple random sample. Complete parts a
through c below.
a) Are the conditions for creating a confidence interval
satisfied? Explain.
b) Construct a 95% confidence interval for the proportion of
"red snapper" packages that were a different kind of...

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