What is thenull hypothesis that would be appropriate for a hypothesis test of the question "Is there a difference in the baseline proportion of those with hypertension between the protocol group and the control group?"

• The proportion of those with hypertension isthe same in both groups (protocol and control)
• The proportion of those with hypertensiondifferent in both groups (protocol and control)
• The proportion of those with hypertension ishigher for the protocol group than for the control group
• The proportion of those with hypertension islower for the protocol group than for the control group