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Unformatted text preview: MGCR 271 Midterm Exam Winter 2010 MGCR 271: Business Statistics Midterm Exam 18 Feb 2010 Examiner: Ramnath Vaidyanathan Assoc Examiner: Student Name McGill ID INSTRUCTIONS 1. Please write your NAME and STUDENT NUMBER on the exam paper. 2. This examination is PRINTED ON BOTH SIDES of the paper. 3. This examination consists of a total of 4 QUESTIONS. 4. This examination consists of a total of 3 pages, including the cover page. 5. If you find any pages MISSING bring it to the attention of the invigilator immediately. 6. SPACE IS PROVIDED on the examination to answer all questions. 7. MARKS alloted to each question appear next to question numbers. 8. This is a CLOSED BOOK examination and counts for 25% of your final grade. 9. TABLES and SELECTED FORMULAE are handed out separately. 10. Your are permitted one single-sided CRIB SHEET printed or hand-written. 11. Show LOGIC since part marks will be given for method and partial results. 12. If you feel that a question is ambiguous, briefly explain your interpretation assumptions. 13. You are permitted TRANSLATION dictionaries ONLY. 14. STANDARD CALCULATOR permitted ONLY. 15. This examination and the tables provided MUST BE RETURNED. 16. GOOD LUCK! Page 1 of 3 MGCR 271 Midterm Exam Winter 2010 1. Suppose that a random sample of 64 students at McGill University is asked to measure the length of their right foot in centimeters. A 95% confidence interval for the mean foot length for students at this university turns out to be (20 . 5 , 25 . 7). (a) (1 point) Would you expect about 95% of all McGill students to have foot lengths within this interval? Explain....
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