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Unformatted text preview: students who are sophomores is .1, the proportions of students who are juniors is .3 and the proportions of students who are seniors is .4. [pfresh=.2; psoph=.1 pjr=.3; psr=.4]. Use .05 significance level and the following data on enrollments: group number fresh 15 soph 15 jr 25 sr 45 6 [10] Test the null hypothesis that the mean time to find parking is equal to 15 minutes. A sample of 60 students had a mean time of 13.5 minutes and a standard deviation of 4 minutes. . Use .05 significance level and a two tail test. 7 [15] Test the null hypothesis that the mean for run students is less than or equal to the mean for runb. Use .05 significance level, a one tail test and the following data: Run Runb Mean 45 42 Variance 25 20 number 60 50...
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This note was uploaded on 11/06/2010 for the course STATS 220:231 taught by Professor Vanderhoff during the Spring '10 term at Rutgers.
 Spring '10
 VANDERHOFF
 Statistics, Variance

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