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stats....normal distribution...z score...wtf

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Here I am studying for a stats test tomorow, and I'm stomped by an example I wrote down during lecture, can anybody enlighten me? Here's an mspaint of the problem:

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Because the opposite of greater than or equal to is less than.

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Guest Anonymous Poster
The z score table being used provides the proportion of the population that is less than a given z score. Your z score table is apparently providing the proportion between z=0 and your z score.

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