36.A study is designed to investigate whether there is a difference in response-

Question

36.A study is designed to investigate whether there is a difference in response-to various treatments in patients with Rheumatoid arthritis. The outcome is the patient's self-reported effect of treatment. The data are shown below. If you "plan to run a test at a 5% level of significance to test whether there is a significant difference in effect of treatment, what is your critical value for this test?. T Symptoms WorsenedH Symptoms Improved 142 218 29H No Effectt Total Treatment 12 Treatment 2 Treatment 3 151 12x 14# 50 50% 37. Based on the data and hypothesis testing you performed in 036, do you reject the-null hypothesis which states that the patients' self reported effect of treatment is not independent of the treatment type? (enter 1 for 'yes and 0 for nop) RR A small pilgt study is conducted to investigate the effect of a nutritional supplement on total body re its effect on body weight.

Explanation / Answer

36)

critical value = 9.487729

37)

TS = 11.3560

since TS >critical value

we reject the null hypothesis

1- yes

Please rate

c1 c2 c3 sum r1 22 14 14 50 r2 14 15 21 50 r3 9 12 29 50 sum 45 41 64 150 Eij 1 2 3 expected 1 15 13.66667 21.33333 2 15 13.66667 21.33333 3 15 13.66667 21.33333 0i 22 14 14 14 15 21 9 12 29 Ei 15 13.66667 21.33333 15 13.66667 21.33333 15 13.66667 21.33333 (Oi-Ei)^2/Ei 3.266667 0.00813 2.520833 0.066667 0.130081 0.005208 2.4 0.203252 2.755208 sum 11.35605 critical value 9.487729

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