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Thanks for the help! Find the z-score that marks the 20th percentile (denoted P20). That is, find the z-score that delineates the lower 20% from

Thanks for the help!

Find the z-score that marks the 20th percentile (denoted P20). That is, find the z-score that delineates the lower 20% from the upper 80% of all the z-scores. Enter your answer to 2 or 3 decimal places

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