(e) In a clinical test with 540 subjects, 63% showed improvement from the old treatment. While in a clinical test with a
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(e) In a clinical test with 540 subjects, 63% showed improvement from the old treatment. While in a clinical test with a
(e) In a clinical test with 540 subjects, 63% showed improvement from the old treatment. While in a clinical test with another 630 subjects, 67% showed improvement from the new treatment. Test, at the 2% level of significance, on whether the new treatment preforms better than the old treatment. State any assumption(s)/approximation(s) used. [6 marks)
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