Angina pectoris is a chronic heart condition in which the pa

Angina pectoris is a chronic heart condition in which the patient has periodic attacks of chest pain. In a study to evaluate the effectiveness of the drug Timolol in preventing angina attacks, patients were randomly assigned to receive a daily dosage of either Timolol or placebo for 28 weeks. Here\'s the data .Use two hypothesis testing methods to test the effectiveness of using Timolol in preventing angina attacks.

Angina Free

No Angina Free

Timolol

44

116

Placebo

19

128

Solution

Null hypothesis: there is no effectiveness of using Timolol in preventing angina attacks.

Alternative hypothesis: there is the effectiveness of using Timolol in preventing angina attacks.