Do question 3 Pediatric researchers carried out a study on various options for treating a child's cough. Asample of 120 children who were ill with an upper respiratory tract infection and theirparents participated in the study. On the first day, a total symptoms score in points wasmeasured for each child (higher indicating worse symptoms). That night 40 randomlyselected children received dextromethorphan (DM, over-the-counter cough medicine),another 40 randomly selected children received a dosage of honey, and the remaining 40were given no dosage at all. On the second day, the total symptoms score in points wasmeasured again for each child and the improvement score was computed (improvement%3Dday 1 score - day 2 score).1. This study is [ Select ]2. For this study, the variable improvement score is[ Select ] Boxplots of Improvement Scores by GroupDMGroupThe provided boxplots compare the improvement scores for the 40 children in each group.Use these boxplots to answer the following three questions.3. About 25% of the children in the control group (C) had an improvement score ofat most [ Select ]points.4. For children in the honey group (H), the least improvement was about[ Select ]points.5. For this study, approximately how many of the children in the DM group hadimprovement scores between 9 and 11 points?[ Select ]Improvement Score15

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MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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Do question 3

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 [ Select ]
2. For this study, the variable improvement score is
[ Select ]

Boxplots of Improvement Scores by Group
DM
Group
The provided boxplots compare the improvement scores for the 40 children in each group.
Use these boxplots to answer the following three questions.
3. About 25% of the children in the control group (C) had an improvement score of
at most [ Select ]
points.
4. For children in the honey group (H), the least improvement was about
[ Select ]
points.
5. For this study, approximately how many of the children in the DM group had
improvement scores between 9 and 11 points?
[ Select ]
Improvement Score
15

Expert Solution

Given 3

Box plots show to what extent the extreme values are from most of the data which consists of the five values given by the minimum value, the first quartile, the median, the third quartile, and the maximum value.

The smallest and largest data values label of the boxplot is given by the endpoints whereas the first quartile marks one end of the box and the third quartile marks the other end of the box. And the median falls inside the box which is denoted by a line through it.

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