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The test statistic\(\style{font-family:Times New Roman;}{\frac{{\overline X}_1-{\overline ...

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The test statistic\(\style{font-family:Times New Roman;}{\frac{{\overline X}_1-{\overline ...

The test statistic

$\style{font-family:Times New Roman;}{\frac{{\overline X}_1-{\overline X}_2-\Delta_0}{\sqrt{\frac{\sigma_1^2}{n_1}+\frac{\sigma_2^2}{n_2}}}}$

follows a standard normal distribution if:

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_{$\style{font-family:Times New Roman;}{n_1\geq30}$}and the samples are dependent.

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$\style{font-family:Times New Roman;}{n_2\geq30}$ and the samples are dependent.

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both $\style{font-family:Times New Roman;}{n_1}$ and_{$\style{font-family:Times New Roman;}{n_2\geq30}$}and the samples are dependent.

▸

both $\style{font-family:Times New Roman;}{n_1}$ and $\style{font-family:Times New Roman;}{n_2\geq30}$ and the samples are independent.

Textbook

Introductory Statistics: A Problem-Solving Approach

Edition: 3^rd

Author: Kokoska

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this is exactly what I needed

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