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Unformatted text preview: Student Name: Student Number: Row number in class during test: Seat number in class during test: Faculty of Science MIDTERM EXAMINATION Mathematics 203 Principles of Statistics I February 11th, 2008 Answer directly on the test (use front and back if necessary). Calculators are allowed. One 8.5” × 11” sheet of notes is allowed. Language dictionaries are allowed. There are 9 pages to this exam and the total number of marks for the exam is 100. There is a bonus question at the end that is worth up to 10 extra points for a correct answer. It does not hurt your score to skip the bonus question. 1 Question 1: (20 points) Professor Steele, during his graduate school days at the University of Washington in Seattle, took up running one summer (in May). Every morning he would get up at 6 a.m. and run 5.1 miles. Here is the distribution of his runnings times. russruntimes Frequency 36 38 40 42 44 46 48 50 10 20 30 40 38 40 42 44 46 48 (a) Describe the distribution of Russ’s running times. • Center: The center of the data app 2 Here is a table of Professor Steele’s running times categorized as greater than 45 minutes and less than 45 minutes vs. the weather for that day: Running time Weather ≤ 45 min. > 45 min. Total Sunny 40 41 81 Rainy 6 33 40 Total 46 81 121 (b) Would you say that the weather is associated with the running times? Explain why or why not....
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This note was uploaded on 06/23/2010 for the course MATH 267815 taught by Professor Wolfson,d during the Spring '10 term at McGill.
 Spring '10
 Wolfson,D

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