Question

An insurance company checks police records on 562 accidents selected at random and notes that teenagers...

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.

  1. We are​ 95% confident that a randomly sampled accident would involve a teenager a percent of the time that falls inside the confidence interval limits.
  2. We are​ 95% confident that the percent of accidents involving teenagers is 14.4​%.
  3. We are​ 95% confident that the true percentage of accidents involving teenagers falls inside the confidence interval limits.

​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?

  1. The confidence interval supports the assertion of the politician. The figure quoted by the politician is inside the interval.
  2. The confidence interval contradicts the assertion of the politician. The figure quoted by the politician is outside the interval.
  3. The confidence interval supports the assertion of the politician. The figure quoted by the politician is outside the interval.
  4. The confidence interval contradicts the assertion of the politician. The figure quoted by the politician is inside the interval.

(1)

  • confidence intervals
  • a true proportion
  • a sample proportion

(2)

  • true proportion
  • sample proportion
  • confidence interval

Please show all of the math. Thank you!

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An insurance company checks police records on 596 accidents selected at random and notes that teenagers...
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 on 573 accidents selected at random and notes that teenagers...
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...
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 of 560 accidents selected at random and found that teenagers...
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 553 accidents selected at random and notes that teenagers...
An insurance company checks police records on 553 accidents selected at random and notes that teenagers were at the wheel in 85 of them. ​a) Construct the​ 95% confidence interval for the percentage of all auto accidents that involve teenage drivers. ​95% CIequalsleft parenthesis nothing % comma nothing % right parenthesis ​(Round to one decimal place as​ needed.)
An insurance company checks police records on 573 accidents selected at random and notes that teenagers...
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.)
An insurance company checks police records on 565 accidents selected at random and notes that teenages...
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...
An insurace company checks police records on 595 accidents at random and notes that teenagers were...
An insurace company checks police records on 595 accidents at random and notes that teenagers were at the wheel in 84 of them. a) Construct the 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.
1. A consumer advocacy group published a study of labeling of seafood sold in three U.S....
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...