z-test for μ\muμ?
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z=xˉ−μ0σ/n\displaystyle z = \frac{\bar{x}-\mu_0}{\sigma/\sqrt{n}}z=σ/nxˉ−μ0. Forkast H0H_0H0 hvis ∣z∣>zα/2|z| > z_{\alpha/2}∣z∣>zα/2 (tosidig) eller z>zαz > z_\alphaz>zα (ensidig).
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