The mean cost to repair the smoke and fire damage that results from home fires o
ID: 3053030 • Letter: T
Question
The mean cost to repair the smoke and fire damage that results from home fires of all causes is $11,389 (HomeAdvisor website, December 2014). How does the damage that results from home fires caused by careless use of tobacco compare? The DATAfile named TobaccoFires provides the cost to repair smoke and fire damage associated with a sample of 55 fires caused by careless use of tobacco products. Using past years' data, the population standard deviation can be assumed known with ? = $3,027.
23910
What is the 95% confidence interval estimate of the mean cost to repair smoke and fire damage that results from home fires caused by careless use of tobacco? Round your answers to whole dollar amounts. *NOTE* $10589 and $12189 are considered wrong according to the homework.
Smoke and Fire Cost 17748 18429 17312 17622 23149 18340 23669 23006 18378 14160 21653 18060 20043 13859 22401 14970 15111 22320 21159 15628 19082 13832 20124 17819 16860 19042 16812 14610 16496 21287 17721 20229 23942 18937 21697 15098 18611 22137 19223 20527 16830 19854 20499 22607 13561 22031 22128 23200 23221 15096 15978 20768 22036 1767823910
Explanation / Answer
The statistical software output for this problem is:
One sample Z confidence interval:
? : Mean of variable
Standard deviation = 3027
95% confidence interval results:
Hence,
95% confidence interval will be:
($18300, $19900)
Variable n Sample Mean Std. Err. L. Limit U. Limit Smoke and Fire Cost 55 19100 408.1606 18300.02 19899.98Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.