Question

Question 22 2 pts A new drug is being tested against a new virus. Twenty patients were treated with the drug and of those, 12 suffered an adverse reaction while 8 did not. The age in years of the two groups were as follows. Adverse Reaction (x) 53 29 53 67 54 57 51 68 38 44 63 53 No adverse reactionly) 44 51 64 33 39 37 41 72 Test at the 5% significance level, whether the data provide evidence that there is a difference between the average of patients who suffer an adverse reaction (Wiland those who do not al The conclusion of the test is: A Reject the nullypothesis and state that there is a difference between the pulation means B. Do not reject the null hypothesis and state that there is no difference between the population means Reject the nullhypothesis and state that there is no difference between the population means D. Do not reject the nullhypothesis and state that there is a difference between the population means.

Answer 1

let x dende data on adverse readion and you No Adverse. n = nx = 12 n2 = 8 su 12 (x - 2)2 = (ai – 52.5) 2 = 1421 x = 52.5, y = 47.625, sy? Žlyi-y)} = 141-47.625)° = 1831-675 1 ) pooled variance = ( x + lying? in = 152.94 n, na - 2

Now t= M = 52.5-4.7.625 = 0.8636509 $1 1 1 + 1 J152.94 11 + 1 Now teal = 0.8636509 & ttab= 2.100922 Also, p-value=P(1H170.8636509) = 0.3991 7x=0.05 Ho is not rejected So, do not reject the Null hypothesis and state that there is no difference between the population means. (option B2.