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Applied Mathematics · 2025 · 1 mark
CBSE 2025 · Central · Set 4 · Q16
The test statistic t for testing the significance of differences between the means of two independent samples is given by
The test statistic t for testing the significance of differences between the means of two independent samples is given by
Official answer
(B)
$\displaystyle \mathrm{t}=\frac{\bar{x}-\overline{\mathrm{y}}}{s \sqrt{\dfrac{1}{\mathrm{n}_1}+\dfrac{1}{\mathrm{n}_2}}}$
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CBSE Class 12 Applied Mathematics past-paper question from the 2025 board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.