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The US Department of Transportation (DOT) is tasked with maintaining the nation's 615,322 bridges. The US DOT...

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Basic Math

The USDepartment of Transportation (DOT) is tasked with maintaining thenation's 615,322 bridges. The US DOT believes the percentage ofstructurally deficient bridges is below 10%. A private civilengineering group found 11.9% of the 15,126 bridges it studiedwere, in fact, structurally deficient.
a.What is the population of interest?
b.What is the sample?
c.The number 11.9% represents a _______________.
d.The number 615,322 represents a_______________.
d.To state that \"11.9 % of allU.S. bridges are structually deficient\" represents a form of___________ statistics.
e.Would it bereasonable to conclude that 11.9% of all U.S.bridges are structually deficient? What considerations should bemade before making such a claim?

Answer & Explanation Solved by verified expert
4.0 Ratings (458 Votes)
Answer a Populaiton of interest is nations 615322 bridges Answer b The sample is 15126 bridges studies by a private civil engineering group Answer c The number 119 represents a percentage of of structurally deficient bridges in the sample Answer d To state that 119 of    See Answer
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