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A group of clinical physicians is
performing tests on patients to determine the effectiveness of a new
antihypertensive drug. Patients with high blood pressure were randomly chosen
and then randomly assigned to either the control group (which received a
well-established antihypertensive) or the treatment group (which received the
new drug). The doctors noted the percentage of patients whose blood pressure
was reduced to a normal level within 1 year. At the 0.01 level of significance,
test appropriate hypotheses to determine whether the new drug is significantly
more effective than the older
A group of clinical physicians is
performing tests on patients to determine the effectiveness of a new
antihypertensive drug. Patients with high blood pressure were randomly chosen
and then randomly assigned to either the control group (which received a
well-established antihypertensive) or the treatment group (which received the
new drug). The doctors noted the percentage of patients whose blood pressure
was reduced to a normal level within 1 year. At the 0.01 level of significance,
test appropriate hypotheses to determine whether the new drug is significantly
more effective than the older drug in reducing high blood pressure.