# Sec 3 S11 - AEM 2100 Spring 2011 Section 3 1.) Name: _...

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Name: _________________ Spring 2011 Section: Section 3 1.) A movie theater whose average monthly attendance was 12,000 persons, with a standard deviation of 2,000, increased its attendance in a certain month to 14,000 persons. An art museum whose average monthly attendance was 6,000 persons, with a standard deviation of 500, increased its attendance during the same month to 7,000 persons. Can we conclude from the data that the increased attendance results for the movie theater were twice as good as those for the art museum? 2.) Suppose that a population of 1,024 domestic general stock funds is obtained, and it is determined that μ , the mean 1-year total percentage return achieved by all the funds, is 28.20 and that σ , the standard deviation, is 6.75. In addition, suppose it was determined that the range in 1-year total returns is from 0.3 to 60.3 and that the quartiles are, respectively, 23.9 ( Q 1 ) and 32.3 ( Q 3 ). a.) What proportion of these funds are expected to be within 1.5 standards deviation of the mean? Within 3 standard deviations of the mean?

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## This note was uploaded on 03/27/2011 for the course AEM 2100 taught by Professor Vanes,c. during the Spring '08 term at Cornell University (Engineering School).

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Sec 3 S11 - AEM 2100 Spring 2011 Section 3 1.) Name: _...

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