Hypothesis Testing: CVLT Acquisition

Applied Statistics for Health Care Professionals – Hypothesis Testing

Grand Canyon University

Workbook EXERCISE 20: Understanding T Scores

Which patient scored the highest on the preoperative CVLT Acquisition? What was his or her T-Score?

1. Which patient scored the lowest on postoperative CVLT Retrieval? What was this patient’s T-Score?
2. Did the patient in Question 2 have more of a memory performance decline than average on the CVLT Retrieval? Provided a rationale for your answer.
3. What is the group Mean and Standard Deviation (SD) for preoperative T-score for CVLT Acquisition?
4. Is the preoperative Retrieval T-score for Patient 5 above or below the mean of the norm of the group? Provide a rationale for your answer.
5. Assuming that the distribution of the preoperative CVLT Retrieval T scores is normal, the middle 68% of the patients had T scores between what two values?
6. Assuming that the distribution of scores for the postoperative CVLT Retrieval T scores is normal, the middle 68% of the patients had T scores between what two values?
7. The researchers state that it appears that the functional integrity of the left temporal lobe, despite evidence of structural abnormality, plays a considerable role when it comes to memory outcomes following left ATL. Can the finding from this study be generalized to a larger population? Provide a rationale for your answer.
8. If a patient had a raw score = 30, what would his/her postoperative CVLT Retrieval score be?
9. Did patients demonstrate more postoperative memory decline among CVLT Retrieval T scores than CVLT Acquisition T scores. Provide a rational for your answer.

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