Math 1P98 December 8 2006 page 1 of 26 BROCK UNIVERSITY Final Examination: December 2006 Number of pages 26 Course: Math 1P98 Number of Students 1270 Date of Examination: Dec 8 2006 Instructors: D. Miners, S. Yee, S. D'Agostino Time of Examination: 2:00 -5:00 pm Name __________________________________ Student Number______________ Write your name on the scantron sheet and shade in the boxes corresponding to your student number . Then paperclip the scantron sheet to the back of your exam paper where it must stay. Do not remove it under any circumstances. Two pieces of colour paper, containing hand writing and nothing glued, attached, printed or photocopied on this paper, and a calculator with two or less lines of display ar the only aids permitted. Graphing calculators are not allowed. Use or possession of unauthorized materials will result in a grade of zero for this examination. Also note that in order to pass this course you must obtain at least 30% on this examination. Answer all questions with the best answer from the choices given. Answer by shading in the box on the scantron sheet in pencil. Also write your answers in this examination paper. Both this examination paper and the scantron sheet must be handed in when you are finished. "None of the above" answers will be different in the second digit as a minimum.

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Math 1P98 December 8 2006 page 2 of 26 Part A 1 mark for each question 1. The grocery bills for a week for a sample of four households were $112.30, $95.10, $134.18, $87.50. The standard deviation of these is a. $107.27 b. $20.72 c. $17.94 d. $21.34 e. none of the above 2. The class width of the temperature histogram of C1, shown here, is a. 9 b. 12 c. 3 d. 11 e. none of the above 3. The modal class of the histogram a. has a midpoint of 6 b. has the same midpoint as the class containing the median. c. is greater than the median class d. is 14 4. Using the dot plot shown to the right, the sample with the largest standard deviation is: a. b. c. d 5. Using the dot plot to the right the sample with the smallest mean is a. b. c. d

Math 1P98 December 8 2006 page 3 of 26 6. Consider the following Minitab output, where the variable is the temperature at a winter vacation. Cumulative Distribution Function Normal with mean = 34 and standard deviation = 3 x P( X <= x ) 30 0.09121 Which of the following statements is true? a. The probability the temperature is over 34 is 0.09121 b. The probability the temperature is less than 30 is 0.09121 c. The probability the temperature is greater than 30 is 0.09121 d. the probability the temperature is greater then 34 is 0.09121 Use the following information for the next 6 questions The distance run outside per week and the place of residence is shown below for a sample of people who regularly run. under 10 km

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