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I have the following exercise that shows $n=6$ numbers:

$$ 1.40, 1.55, 1.35, 1.50, 1.29, 1.64 $$

Is data normally distributed at the 5% significance level?

Surely $\overline{x} = 1.455$, $s=0.1315674732$ and $n_1 = \cdots = n_6 = 1$ but how can i continue?

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