I am in an intro business statistics class and am having difficulty with the fol

Question

I am in an intro business statistics class and am having difficulty with the following problem...

A career counseling firm seeks to compare average annual earnings ('000) across three majors: Major A, Major B, Major C. It computes the following statistics from a sample of 33 students. The mean earnings in the whole sample are $37,000.

Major A: Number of Students = 11, Mean = 33, Variance = 10
Major B: Number of Students = 11, Mean = 42, Variance = 12
Major C: Number of Students = 11, Mean = 36, Variance = 14

Formulate and test the hypothesis that average earnings are the same across three majors.

Explanation / Answer

ans is very simple ...........just you need use the formulae

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