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Social & Preventive Medicine General a3d600d6

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
High-Yield Explanation
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
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