Alzheimers Disease. A patient who has been recently diagnosed with Alzheimers disease takes a cognitive ability test.
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Alzheimer’s Disease. A patient who has been recently diagnosed with Alzheimer’s disease takes a cognitive ability test. The patient scores a 45 in the test, whereas the mean of the test is usually 52 with a standard deviation of 5.
a. Find the z-score for the patient, assuming that the test is unbiased.
b. What can you conclude about the condition of the patient?
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