Bluman A.G. Elementary Statistics- A Step By Step Approach

Instructor’s Section Answers7. H 0 : r 0; H 1 : r 0; r 0.907; C.V. 0.875; reject.There is sufficient evidence to conclude a relationshipexists between the numbers of female physicians and malephysicians in a given field. y 102.846 3.408x;y 6919Male specialties8. 1.417* For calculation purposes only. No regressionshould be done.9. 0.468* (TI value 0.513)10. 2.89 (TI value 2.845)11. 3.34 y 5.10*12. 79 y 93 13. 22.01*14. R 0.873 15. Radj 2 0.643**Answers may vary due to rounding.Chapter Quiz1. False 2. True3. True 4. False5. False 6. False7. a 8. a9. d 10. c11. b 12. Scatter plot13. Independent 14. 1, 115. b16. Line of best fit17. 1, 118. H 0 : r 0; H 1 : r 0; r 0.600; C.V. 0.754;do not reject. There is no significant linear relationshipbetween the price of the same drugs in the United Statesand in Australia. No regression should be done.Price in Australia20,00015,00010,0005000y0 1000 2000 3000 4000 5000Female specialtiesPrice Comparison of Drugsy1.81.71.61.51.41.31.21.11.00.90.81.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4Price in United Statesxx19. H 0 : r 0; H 1 : r 0; r 0.078; C.V. 0.754;do not reject. No regression should be done.Number of accidents20. H 0 : r 0; H 1 : r 0; r 0.842; C.V. 0.811; reject.y 1.918 0.551x; 4.14 or 4Number of cavities21. H 0 : r 0; H 1 : r 0; r 0.602; C.V. 0.707; do notreject. No regression should be done.Level of diet543230025020015010022. 1.129*23. 29.5* For calculation purposes only. No regression shouldbe done.24. 0 y 5*25. 217.5 (average of y values is used since there is nosignificant relationship)26. 119.9*Age vs. No. of Cavitiesy7654321x05 6 7 8 9 10 11 12 13 14Age of child27. R 0.729*28. R 2 adj 0.439*y1x055 57 59 61 63 65 67Driver’s ageyDriver’s Age vs. No. of AccidentsFat vs. Cholesterol50x05 6 7 8 9 10Grams*These answers may vary due to the method of calculation or rounding.IS–58