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Me needs Help

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Tarynsmummy Tue 23-May-06 21:10:44

Okay, heres one of the questions I have to do : 'Calculate 68% and 95% confidence limits if a numerical ability test has a standard error of measurement of 0.53 and a person has a raw score of 12' Have another question virtually same but asks about z score.

I know how to do it-kind of, but the raw score and z score have thrown me. Do I need to change them before calculation?

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