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# Crash testing is a highly expensive procedure to evaluate the ability of an automobile

ISBN: 9780073401331 38

## Solution for problem 5 Chapter 5.5

Statistics for Engineers and Scientists | 4th Edition

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Problem 5

Crash testing is a highly expensive procedure to evaluate the ability of an automobile to withstand a serious accident. A simple random sample of 12 small cars were subjected to a head-on collision at 40 miles per hour. Of them 8 were totaled, meaning that the cost of repairs is greater than the value of the car. Another sample of 15 large cars were subjected to the same test, and 5 of them were totaled. Find a 95% confi- dence interval for the difference in the proportions of small cars and large cars that are totaled.

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Week 1 of Notes : ( Consists of Chapter 1 ) Statistics 1 , Lecture 1 notes in more detail Chapter : Statisti is a waysort out inform, a source to make sense out of certain data. Data is justinformation from an obser ation. A Case known also asobservational , is an individual entibeing observed for data. A Variablis â€‹haracterisor trahat vari s. *Depending...

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