You administer a test of reading ability to a client, and they achieve a standard score of
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- You administer a test of reading ability to a client, and they achieve a standard score of 130. For this particular test, the mean in the standardization sample is 100, with a standard deviation of 10. The reliability, based up Cronbach’s alpha, is reported to be .75.
- Compute a 95% confidence interval for the client’s true score, given their obtained score of 130. Be sure to show your work.
Related Book For
Introduction To Statistics And Data Analysis
ISBN: 9780495118732
3rd Edition
Authors: Roxy Peck, Chris Olsen, Jay L. Devore
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