Considering that she wants to test if the medicine reduces the blood pressure, the hypothesis tested are as follows:
[tex]H_0: \mu_B = \mu_A, H_1: \mu_B > \mu_A[/tex]
At the null hypothesis, it is tested if the blood pressure was not reduced, that is, the means are equal, hence:
[tex]H_0: \mu_B = \mu_A[/tex]
At the alternative hypothesis, it is tested if the blood pressure was reduced, that is, the mean before is greater than the mean after, that is:
[tex]H_1: \mu_B > \mu_A[/tex]
More can be learned about hypothesis tests at https://brainly.com/question/16313918
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