The following are the systolic blood pressures (mm Hg) of 12 patients undergoing drug therapy for hypertension:

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The following are the systolic blood pressures (mm Hg) of 12 patients undergoing drug therapy for hypertension:

183, 152, 178, 157, 194, 163, 144, 114, 178, 152, 118, 158 Can we conclude on the basis of these data that the population mean is less than 165? Let a ΒΌ :05.

What assumptions are necessary?

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