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Make Test Booklet DESCRIPTIVE STATISTICS Variable score Mean Median 1045.7 TrMean 1024.7 StDev 1041.9 SE Mean 221.9 Variable 31.4 Minimum Maximum score 628.9 1577.1 Q1 877.7 Q3 1219.5 Some descriptive statistics for a set of test scores are shown above. For this test, a certain student has a standardized score of z = -1.2. What score did this student receive on the test? (A) 266.28 779.42 1008.02 1083.38 1311.98 44. The management team of a company with 10,000 employees is considering installing charging stations for electric cars in the company parking lots. In a random sample of 500 employees, 15 reported owning an electric car. Which of the following is a 99 percent confidence interval for the proportion of all employees at the company who own an electric car? (A) 0.03 + 2.326, (0.03) (0.97) 500 (B) 0.15 + 2.326, 0.15)(0.85) 500 (C) 0.03 + 2.576, (0.03)(0.97) 500 (D) 0.15+ 2.576, (0.15) (0.85) 500 0.03 + 2.576 (0.03)(0.97) (0.03)(0.97) 500 10, 000 Page 20 of 42 AP Statistics