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joshtatum92 joshtatum92
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If the underlying populations are normally distributed and both population variances are equal, the test statistic

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\(\style{font-family:Times New Roman;}{\frac{{\overline X}_1-{\overline X}_2-\Delta_0}{S_p^2\sqrt{\frac1{n_1}+\frac1{n_2}}}}\)

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follows a:



▸

standard normal distribution if both samples are large.



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Student’stdistribution with\(\style{font-family:Times New Roman;}{n-1}\)degrees of freedom.



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standard normal distribution with\(\style{font-family:Times New Roman;}{n_1+n_2-2}\)degrees of freedom.



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Student’stdistribution with\(\style{font-family:Times New Roman;}{n_1+n_2-2}\)degrees of freedom.

Textbook 
Introductory Statistics: A Problem-Solving Approach

Introductory Statistics: A Problem-Solving Approach


Edition: 3rd
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billykrabillykra
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A year ago
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joshtatum92 Author
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