Question: Which number represents the ratio comparing the average age in group B togroup A if the average age of A=50 years old and B=65 years

Which number represents the ratio comparing the average age in group B togroup A if the average age of A=50 years old and B=65 years old?

If the average age in population C is 24 years old, how much younger, on average is C than B, given that the average age in B is 30 years old?

There are 64 cases in a "case-control" study and 128 controls what is the ratio of cases to controls?

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Which number represents the ratio comparing the average age in group B to group A if the average age of A=50 years old and B=65 years old?

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