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29 September, 22:50

Find the area under the standard normal curve to the left of z = - 2.8 and to the right of z = 2.06

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  1. 29 September, 23:08
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    Z₁ = - 2.8 correspond to an area of = 0.0026

    z₂ = 2.06 correspond to an area of = 0.9750

    z₁ ≤ Area ≤ z₂ ↔ z₂ - z₁ = 0.9750 - 0.0026 = 0.9724

    Answer Area = 0.9724
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