CHAPTER 1

The picture should show a bell-shaped curve centered on 100. The interval from 90 to 110 should encompass 68% of the area, from 80 to 120 should encompass 95% of the area, and 70 to 130 should encompass 99.7% of the area. 8.8 a. The standardized score is (450 − 497)/115, or about −0.41, which is the 34th percentile. b. ................
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