A chi-sqaure test would be most appropriate for testing which one of the following hypotheses?: (A) That the mean AIPGE score of Delhi students is greater than that of mumbai students, (B) That a smaller propoion of poeple who were immunized against chicken pox subsequently develop zoster than those who were not immunized, (C) That the mean blood pressure of black and white male-hypeensive patients taking ACE inhibitors is the same as that of black and white female-hypeensive patients taking ACE inhibitors and that of black and white males and females taking diuretics and placebos, (D) That the mean cost of treating a patient with coronary aery disease with angioplasty isgreater than the mean cost of providing medicaltreatment
Answer is B. Ans. is 'b' i.e., That a smaller propoion of poeple who were immunized against chicken pox subsequently develop zoster than those who were not immunized Chi-square test is for qualitative data, used when the observations are in propoions, fractions and percentage. Amongst the given options only option 'to' has observtions in propoion -3 requires non-parametric tests like chi-square test. Option a, c and d are for comparison of quantitative data (mean) --> Parametric test (most common student t-test) is required