main

prev        

Statement of a problem № m129

        next    

A software design company is creating a new, faster search engine. The search engine is clearly faster, but initial tests indicate there is more variation in the time to perform a search. A sample of 16 different searches showed that the standard deviation of the search time was 22 hundredths of a second for the new search engine and 12 hundredths of a second for the current search engine. At the .05 significance level, can we conclude that there is more variation in the search time of the new search engine?




New search. (Also 1294 free access solutions)