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practice_prel1 - Engineering Statistics ENGRD270 Practice...

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Engineering Statistics ENGRD270 Practice Prelim No.1 Spring 2008 Put your Section Number on the Exam book. Read the warning on the front page of the exam book. All students must obey the Honor Code. This exam consists of 5 questions on two sides. Each carries equal weight. You will be allowed 75 minutes to complete the exam. If you are leaving the exam early, please do not disturb the people around you who are still taking the exam. Please be sure to show enough work to make your method of solution clear. Numerical answers alone (with no supporting work) will receive no credit; partial solutions will receive partial credit. The exam is closed book. You are allowed to use one 8.5 by 11 inch sheet of notes (both sides) only. Calculators may not be shared. ADVICE: Spend no more than 15 minutes on any one question. After that, move on to the next question. Remember — there is partial credit. 1. (20 points) Consider the following stemplot 1 9 6 3 10 18 9 11 244678 14 12 11249 17 13 888 24 14 0012249 (9) 15 002334458 27 16 022334567778999 12 17 112 9 18 029 6 19 013 3 20 0 2 21 09
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