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Home Q & A Board Science-Related Homework Help Mathematics Statistics and Probability
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doggerfresh doggerfresh
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When you are testing whether two population means of two normally distributed populations differ and the population variances are both unknown but unequal, thet test statistics will usually have a non-integer number of degrees of freedomv. In this case, you should:


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round down to the previous integer.



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round up to the next integer.



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assume that the population variances are equal and usev=n1+n2– 2.



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change the sample sizes until the number of degrees of freedom is an integer.

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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astroasisastroasis
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doggerfresh Author
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A year ago
Helped a lot
Zacellison
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This helped my grade so much Perfect
Zacellison
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2 hours ago
this is exactly what I needed
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