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Home Q & A Board Science-Related Homework Help Mathematics
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leggomyeggo33 leggomyeggo33
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11 years ago
For AP Stats, I calculated the z-score which is 1.333 and I am supposed to find the percentile.
(68-64)/3 was the equation with the plugged in info.

Also, what value would be in the 97th percentile?

Thanks Slight Smile
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#1
11 years ago
A Z-table is used to convert percentages to Z-scores and vice versa.

When I look up Z=1.33 in this Z-table (http://lilt.ilstu.edu/dasacke/eco148/ztable.htm), I get P = .9082, or 90.82%. That would be the 90th percentile. You could also interpolate between Z=1.33 and Z=1.34 to get a more accurate answer.

For P = 97% = 0.97, Z = 1.88 from the table.
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