A hospital has treated of 500 patients suffering from a disease. Find whether the new treatment is superior to the conventional treatment:
No. of patients
Favourable Not favorable
New 280 60
Conventional 120 40
Use chi-square test.
(Note: Table value at 5% Level of significance at one degree of freedom is 3.841
Table value at 5% Level of significance at two degree of freedom is 5.99
Table value at 5% Level of significance at three degree of freedom is 7.815)