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The 90th percentile of a normal distribution is how many standard deviations above the mean?

The 90th percentile of a normal distribution is how many standard deviations above the mean?
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The 90th percentile of a normal distribution is how many standard deviations above the mean?

User Teiem
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z=1.28
the 90th percentile of a normal distribution is 1.28

User Chuff
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