Suppose that a pharmaceutical house wishes to demonstrate that a new anti-hypert

Question

Suppose that a pharmaceutical house wishes to demonstrate that a new anti-hypertensive drug which has fewer and less severe side-effects than an old version is not worse than the older medication at lowering blood pressure. It is decided that if the mean blood pressure produced by the new drug is less than 2 units higher than that produced by the older drug, the new drug will be declared "not worse than" the old drug. A clinical trial is conducted with the following results. x^bar N = 130.8 c^bar_0 = 134.1 s^2_p = 140.6 n_N = n_o = 63 where x^bar_N and x^bar_o represent the mean systolic blood pressures for the groups taking the new and old drugs respectively, and n_N and n_o are the two sample sizes. Given the stated goal of the study, which of the following do you believe would be the most likely null and alternative hypotheses tested by the researchers? H_0: mu_N = mu_o H_A: mu_N 2 H_0: mu_N = mu_o H_A = mu_N notequalto mu_o H_0: mu_N - mu_o = 2 H_A = mu_N - mu_o

Explanation / Answer

from above hypothesis are as below

null hypothesis: Ho : N-0 =2

alternate Hypothesis HA : N-0 <2

last option is correct

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