FinalExam07 - Name Jackie Lewis Lab Section 1 BTRY 301...

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Name: Jackie Lewis BTRY 301 / NTRES 313 Lab Section: 1 Final Exam Fall 2007 Exam is due Wednesday Dec 12 11:30 AM 1198 Comstock Code of Academic Integrity Absolute integrity is expected of every Cornell student in all academic undertakings. Integrity entails a firm adherence to a set of values, and the values most essential to an academic community are grounded on the concept of honesty with respect to the intellectual efforts of oneself and others. Academic integrity is expected not only in formal coursework situations, but in all University relationships and interactions connected to the educational process, including the use of University resources. A Cornell student's submission of work for academic credit indicates that the work is the student's own. All outside assistance should be acknowledged, and the student's academic position truthfully reported at all times. In addition, Cornell students have a right to expect academic integrity from each of their peers. GUIDELINES FOR STUDENTS General Responsibilities 1) A student shall in no way misrepresent his or her work. 2) A student shall in no way fraudulently or unfairly advance his or her academic position. 3) A student shall refuse to be a party to another student's failure to maintain academic integrity. 4) A student shall not in any other manner violate the principle of academic integrity. Examinations No student may take an examination for another student. Between the time a take-home examination is distributed and the time it is submitted by the student for grading, the student may not consult with any persons other than the course professor regarding the examination. The student is responsible for understanding the conditions under which the examination will be taken. BTRY 301/ NTRES 313 Final Exam Fall 2007 Page 1 of 11
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Name: Jackie Lewis BTRY 301 / NTRES 313 Lab Section: 1 Final Exam Fall 2007 1. A recent article in the Journal of Adolescent Research described a study whose purpose was to determine whether adolescents who preferred certain types of music reported higher rates of reckless behaviors, such as speeding, drug use, shoplifting, and unprotected sex. Independently chosen random samples were selected from each of four groups of students with different musical preferences at a large high school: 1) acoustic/pop, 2) mainstream rock, 3) hard rock, and 4) heavy metal. Each student in these samples was asked how many times he or she had engaged in various reckless activities during the last year. The following script lists data on driving over 80 mph that is consistent with summary quantities given in the article. music = data.frame( Preference=c( rep("Acoustic.Pop",20), rep("Soft.Rock",20), rep("Hard.Rock",20), rep("Heavy.Metal",20)), Count=c( 2,3,4,1,3,3,3,3,2,2,1,3,2,2,2,3,2,2,3,4, 3,2,1,2,3,4,3,2,4,4,4,4,2,3,2,2,2,3,1,3, 3,4,3,1,2,1,4,2,2,2,3,3,4,3,3,2,3,4,2,4, 4,3,4,3,3,3,3,3,2,4,4,5,4,5,3,4,5,4,2,3)) a) (5 points) State the null and alternative hypotheses that we wish to test
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FinalExam07 - Name Jackie Lewis Lab Section 1 BTRY 301...

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