140 Is honey a cough remedy? Refer to the Archives of Pediatrics and Adolescent Medicine (Dec. 2007) study of honey as a remedy for coughing, Exercise 62. Recall that coughing improvement scores were recorded for children in three groups: the over-the-counter cough medicine dosage (DM) group, the honey dosage group, and the control (no medicine) group. The data are saved in the HONEYCOUGH file.

a. For each group, construct a box plot of the improvement scores.

b. How do the median improvement scores compare for the three groups?

c. How does the variability in improvement scores compare for the three groups?

d. Do you detect any outliers in any of the three coughing improvement score distributions?