Question: Show that for any > 0, when the population distribution is normal and is known, the two-tailed test satisfies (0 - ) =

Show that for any Δ > 0, when the population is normal and σ is known, the two-tailed test satisfies β(μ0 - Δ) = β(μ0 - Δ), so that β(μʹ) is symmetric about μ0.

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