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Let z be positive so that -z is the negative z score for which you want the probability.

Pr(Z < -z) = Pr(Z > z) = 1 - Pr(Z < z).

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Q: How do you find probabilty of negative z score?
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What is the meaning of a negative z score?

A negative z score is a value that is less than the mean value.


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What is measured by the sign of a z-score?

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Can a negative z score be greater than a positive z score?

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What is the z score that correspond to P18?

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