? asked in Science & MathematicsMathematics · 2 months ago

The area between z=-1.03 and z= 2.54?

3 Answers

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  • 2 months ago

    We require P(-1.03 < z < 2.54)

    i.e. P(z < 2.54) - P(z < -1.03)

    so, P(z < 2.54) - P(z > 1.03)

    or, P(z < 2.54) - [1 - P(z < 1.03)]

    Hence, P(z < 2.54) + P(z < 1.03) - 1

    From normal table we get:

    0.9945 + 0.8485 - 1

    i.e. 0.843

    :)>

  • 2 months ago

    P(-1.03 < z < 2.54) ≈ 0.843

  • ?
    Lv 6
    2 months ago

    Lookup up the values and take the difference.

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