Question: Two new ointments, Type A and Type B for relieving poison ivy, were tested on randomly selected patients. One group of 73 patients were given

Two new ointments, Type A and Type B for relieving poison ivy, were tested on randomly selected patients. One group of 73 patients were given Type A ointment, and another group of 49 patients was given Type B ointment. The results of the effectiveness of the two ointments are given as follows:

For a significance level of 1%, determine if the two ointments are similarly effective on poison ivy.

Effective Not Effective

Type A 51 22

Type B 23 26

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