LQ2 - I E 27 Second Long Quiz (THV & THW) 2008 July 21...

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2008 July 21 (1:00 PM – 4:00 PM) General Instructions: 1. You may use only pens with Black or Blue ink; otherwise only 50% of score is recorded. 2. Students caught cheating will automatically get a grade of 5.0 in this course. 3. Do not round off intermediate values. Final answers should be given in exactly 5 significant digits. 4. Box final answers. Should there be ambiguity on what your final answer is, you stand to lose all the points in that item. 5. Late papers will receive a 1-point penalty for every minute late. 6. Use of cell phones is prohibited. 7. Use only the right side of your bluebook. Use the left side for scratch. The teacher will not check stuff written on the left side of the bluebook. 8. No borrowing of calculators between students. In case two students are caught sharing a calculator, teacher will keep said calculator for the duration of the test. 9. Insert questionnaire in bluebook after the test. Bluebooks with no questionnaires inserted will not be checked. Highest possible score: 121/120 (101%) Passing: 71/120 (60%) I. Choices . Answer the items guided by the two choices that precede each question. (10 points) 1. True or False: E(X 2 ) is always greater than [E(X)] 2 . 2. True or False: If a random variable X can have any integer value from 0 to 30 and E(X) = 0.4, then the most likely value of X in an experiment is 0. 3. True or False: If the mean score in an exam is E(X) = 70%, then assuming nobody got exactly 70%, half of the class that took the test got less than 70% and the other half got higher than 70%. 4. True or False: The probability of success can equal the probability of
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LQ2 - I E 27 Second Long Quiz (THV & THW) 2008 July 21...

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