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Or a standard normal distribution, find:P(-2.72 < z < -1.78)Normal Table
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Or a standard normal distribution, find:P(-2.72 < z < -1.78)Normal Table

User Png
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We know that P(−b < Z ≤ −a ) = P(a < Z ≤ b )

Then,


P(-2.72Now:[tex]P(z<2.72)-P(z<1.78)=0.9967-0.9625=0.0342

User Amitabha
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