mid07 - ISMT111 Business Statistics Midterm Examination For...

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ISMT111 Business Statistics Midterm Examination For sections 5 & 6 only 18 October 2007 Directions 1) Answer ALL FIVE questions. Marks are shown in square brackets. 2) There are 4 pages in this examination paper, which includes a normal table. Check to make sure you have a complete set and notify the invigilator immediately if part of it is missing. 3) Key formulas are provided separately. 4) Calculator may be used in this examination. 5) You are given TWO HOURS to complete this examination. Do not begin until you are told to do so.
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Question 1: [15 Marks] The stem-and-leaf displays of scores for two groups of students taking the same examination from a statistic course is given below. (a) Please describe the shape of the score distribution for Group I. (b) Although the mean of Group II 74.0 is lower than 75.29 for Group I, after checking other descriptive statistics, the instructor of the statistics course concluded that Group II did better in the examination. Please give as many reasons as possible to support the instructor’s conclusion. 0 0 0 1
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mid07 - ISMT111 Business Statistics Midterm Examination For...

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