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Passive exposure to environmental tobacco smoke has been associated an increased frequency of respiratory tract infections in normal children. Is this association me pronounced in children with cystic fibrosis? To answer this question, 43 children (18 girls and boys) attending a 2-week summer camp for cystic fibrosis patients were studied (New England Jour of Medicine, Sept. 20, 1990). Among several variables measured were the child's weight percent (y) and the number of cigarettes smoked per day in the child's home (x). a. For the 18 girls, the coefficient of correlation between y and x was reported as r = -. this result. gre .50. Interpr b. Refer to part a. The p-value for testing Ho: p = 0 against Ha: p # 0 was reported as p = .0 n Interpret this result. c. For the 25 boys, the coefficient of correlation between y and x was reported as r = -.12. Interpr this result.

Passive exposure to environmental tobacco smoke has been associated an increased frequency of respiratory tract infections in normal children. Is this association me pronounced in children with cystic fibrosis? To answer this question, 43 children (18 girls and boys) attending a 2-week summer camp for cystic fibrosis patients were studied (New England Jour of Medicine, Sept. 20, 1990). Among several variables measured were the child's weight percent (y) and the number of cigarettes smoked per day in the child's home (x). a. For the 18 girls, the coefficient of correlation between y and x was reported as r = -. this result. gre .50. Interpr b. Refer to part a. The p-value for testing Ho: p = 0 against Ha: p # 0 was reported as p = .0 n Interpret this result. c. For the 25 boys, the coefficient of correlation between y and x was reported as r = -.12. Interpr this result.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter4: Equations Of Linear Functions
Section4.5: Correlation And Causation
Problem 11PPS
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Passive exposure to environmental tobacco smoke has been associated with growth suppression and an increased frequency of respiratory tract infections in normal children. Is this association more pronounced in children with cystic fibrosis? To answer this question, 43 children (18 girls and 25 boys) attending a 2-week summer camp for cystic fibrosis patients were studied (New England Journal of Medicine, Sept. 20, 1990). Among several variables measured were the child's weight percentile (y) and the number of cigarettes smoked per day in the child's home (x). a. For the 18 girls, the coefficient of correlation between y and x was reported as r = –.50. Interpret - this result. b. Refer to part a. The p-value for testing Ho: p = 0 against H;: p # 0 was reported as p = .03. n Interpret this result. c. For the 25 boys, the coefficient of correlation between y and x was reported asr = -.12. Interpret %3D %3D this result. d. Refer to part c. The p-value for testing Ho: p = 0 against Ha: p # 0 was reported as p = .57. Interpret this result. %3D
Transcribed Image Text:Passive exposure to environmental tobacco smoke has been associated with growth suppression and an increased frequency of respiratory tract infections in normal children. Is this association more pronounced in children with cystic fibrosis? To answer this question, 43 children (18 girls and 25 boys) attending a 2-week summer camp for cystic fibrosis patients were studied (New England Journal of Medicine, Sept. 20, 1990). Among several variables measured were the child's weight percentile (y) and the number of cigarettes smoked per day in the child's home (x). a. For the 18 girls, the coefficient of correlation between y and x was reported as r = –.50. Interpret - this result. b. Refer to part a. The p-value for testing Ho: p = 0 against H;: p # 0 was reported as p = .03. n Interpret this result. c. For the 25 boys, the coefficient of correlation between y and x was reported asr = -.12. Interpret %3D %3D this result. d. Refer to part c. The p-value for testing Ho: p = 0 against Ha: p # 0 was reported as p = .57. Interpret this result. %3D
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