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QUESTION

# Blood pressure is measured in millimeters of mercury (mm Hg) and recorded with the systolic number first, followed by the diastolic number.

Blood pressure is measured in millimeters of mercury (mm Hg) and recorded with the systolic number first, followed by the diastolic number. You want to determine whether one's systolic blood pressure differs depending on whether its measured while standing or supine (lying flat on one's back). You gather 12 college students willing to participate and then measure their systolic blood pressures in both positions, 10 minutes apart: first standing (call this Condition 1), then supine (call this Condition 2). Which of the following are the correct statements of the null and alternate hypotheses, H0 and HA?

H0: µ1 > µ2    and  HA: µ1  ≤ µ2

H0: µ1 ≤ µ2    and  HA: µ1 > µ2

H0: µ1 = µ2 and  HA: µ1  ≠ µ2

H0: µ1  ≠ µ2 and  HA: µ1 = µ2

H0: µ1 < µ2    and  HA: µ1  ≥ µ2

H0: µ1 = µ2    and  HA: µ1 < µ2