Please show each step of your solution for credit. Clearly indicate your final a

Question

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 purpurea randomly assigned healthy children 2 to 11 years old to receive either Echinacea or 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 Moderate Severe 153 128 48 170 157 40 a) Calculate the statistic. (3 points) b) Determine whether the results are significant at the level (3 points) c) Would you advocate for the use of Echinacea in order to reduce the severity of upper respiratory infections? Why or why not? (3 points)

Explanation / Answer

a)

Test statistic = 2.5056

b)

critical value = 5.99

sinceTS< critical value

we fail to reject the null hypothesis

results are not significant

c)

no, since the result is not significant , we can't say that use of Echinacea reduce the severity significantly

c1 c2 c3 sum r1 153 128 48 329 r2 170 157 40 367 sum 323 285 88 696 Eij 1 2 3 expected 1 152.6825 134.7198 41.5977 2 170.3175 150.2802 46.4023 0i 153 128 48 170 157 40 Ei 152.6825 134.7198 41.5977 170.3175 150.2802 46.40229885 sum (Oi-Ei)^2/Ei 0.00066 0.335185 0.985377 0.000592 0.300479 0.883349135 2.505643 critical value 5.991465

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.