# Thread: Need help with this question, very tricky

3. ## Re: Need help with this question, very tricky

So, for the 73th percentile, it's 0.6128, and yeah im using the z chart

5. ## Re: Need help with this question, very tricky

That's the chart i'm using.

6. ## Re: Need help with this question, very tricky

Then I gave you your answer. Just solve for x in the two equations I posted.

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