5. For this study, approximately how many of the children in the DM group had [ Select ] improvement scores between 9 and 11 points? 30 10

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Pediatric researchers carried out a study on various options for treating a child's cough. A
sample of 120 children who were ill with an upper respiratory tract infection and their
parents participated in the study. On the first day, a total symptoms score in points was
measured for each child (higher indicating worse symptoms). That night 40 randomly
selected children received dextromethorphan (DM, over-the-counter cough medicine),
another 40 randomly selected children received a dosage of honey, and the remaining 40
were given no dosage at all. On the second day, the total symptoms score in points was
measured again for each child and the improvement score was computed (improvement
%3D
day 1 score - day 2 score).
1. This study is
an experiment
2. For this study, the variable improvement score is
a quantitative response variab v
Boxplots of Improvement Scores by Group
Improvement Score
15
Transcribed Image Text:Pediatric researchers carried out a study on various options for treating a child's cough. A sample of 120 children who were ill with an upper respiratory tract infection and their parents participated in the study. On the first day, a total symptoms score in points was measured for each child (higher indicating worse symptoms). That night 40 randomly selected children received dextromethorphan (DM, over-the-counter cough medicine), another 40 randomly selected children received a dosage of honey, and the remaining 40 were given no dosage at all. On the second day, the total symptoms score in points was measured again for each child and the improvement score was computed (improvement %3D day 1 score - day 2 score). 1. This study is an experiment 2. For this study, the variable improvement score is a quantitative response variab v Boxplots of Improvement Scores by Group Improvement Score 15
5. For this study, approximately how many of the children in the DM group had
[ Select ]
improvement scores between 9 and 11 points? 30
10
20
Transcribed Image Text:5. For this study, approximately how many of the children in the DM group had [ Select ] improvement scores between 9 and 11 points? 30 10 20
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