Please show each step of your solution for credit. Clearly indicate your final answer.
A study designed to evaluate the effect of the herbal remedy Echinacea purpurearandomly assigned healthy children 2 to 11 years old to receive either Echinaceaor a placebo. Each time a child had an upper respiratory infection treatment with Echinacea or the placebo was given for the duration of the infection. Parental assessment of the illness severity was measured. The following are the counts from the study:
|
Group
|
|
Parental assessment
|
Echinacea
|
Placebo
|
|
Mild
|
153
|
170
|
|
Moderate
|
128
|
157
|
|
Severe
|
48
|
40
|
a) Calculate the statistic.
b) Determine whether the results are significant at the level.
c) Would you advocate for the use of Echinaceain order to reduce the severity of upper respiratory infections? Why or why not?