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Mid term - turn in

Mid term - turn in - STAT 230 Midterm Exam Summer 2010...

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STAT 230 100 POINTS Midterm Exam (120 POINTS POSSIBLE) Summer 2010 Kulansky OPEN BOOK/OPEN NOTES/Calculators Needed (Maximum Time-3 Hours) Circle the best answer for each question 1. The median is b. 6 2. The mode is a. 5 3. The mean is c. 7 4. The 75 th percentile is d. 8 5. The variance is d. 16.5 6. The standard deviation is b. 4.062 7. The coefficient of variation is b. 81.24% 8. The range is c. 10 9. The interquartile range is b. 2 1

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10. If A and B are independent events with P(A) = 0.4 and P(B) = 0.6, then P(A l B) = e. None of the above 11. If A and B are independent events with P(A) = 0.2 and P(B) = 0.6, then P(A U B) = d. .68 12. If A and B are independent events with P(A) = 0.05 and P(B) = 0.65, then P(A l B) = a. 0.05 13. If A and B are mutually exclusive events with P(A) = 0.3 and P(B) = 0.5, then P(A U B) = d. 0.8 14. If A and B are independent with P(A) = 0.3 and P(B) = 0.5, then P(A intersect B) = a. 0.00 15. A lottery is conducted using three urns. Each urn contains chips numbered from 0 to 9. One chip is selected at random from each urn. The total number of sample points in the sample space is a. 30 16. A six-sided die is tossed three times.
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Mid term - turn in - STAT 230 Midterm Exam Summer 2010...

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