Question

Question 21. Blood pressure

9 10 10 20 40 50 oo 0 0 oo 0 0 o 00 o 0 0 o o 0 0 o 0 0 0 00 0 0 0 o o 0 0 0 20. Speed Dating In a study of speed dating conducted at Columbia University, female sub- jects ets were asked to rate the attractiveness of their male dates, and a sample of the results is listed low (1 not attractive; 10 extremely attractive). Can the results be used to describe the variation among attractiveness ratings for the population of adult males? 8 3 8 6 10 3 79 8 5 5 6 8 87 3 5 5 6 8 7 8 887 In Exercises 21-24, find the coefficient of variation for each of the two samples; then com- the variation. (The same data were used in Section 3-1.) re 21. Blood Pressure A sample of blood pressure measurements is taken from Data Set 1 "Body Data" in Appendix B, and those values (mm Hg) are listed below. The values are matched so that 10 subjects each have a systolic and diastolic measurement. Systolic: 118 128 158 96 156 122 116 136 126 120 Diastolic: 80 76 7452 90 88 58 64 72 82 22. Parking Meter Theft Listed below are amounts (in millions of dollars) collected from parking meters by Brinks and others in New York City during similar time periods. A larger data set was used to convict five Brinks employees of grand larceny. The data were provided by the attomey for New York City, and they are listed on the DASL Website. Do the two samples ap- pear to have different amounts of variation? Collection Contractor Was Brinks 1.3 1.5 1.3 1.5 1.4 1.7 1.8 1.7 1.7 1.6 lection Contractor Was Not Brinks 2.2 1.9 1.5 1.6 1.5 1.7 1.9 1.6 1.6 1.8

Answer 1