Exam1C. FA02

Exam1C. FA02 - COURSE MSCI 3710 EXAM 1 Version C S.S Print...

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COURSE: MSCI 3710 Print Name: EXAM 1 Signature: Version C S.S.#: SEMESTER: Fall 2002 Note: Whenever question(s) are connected you may be asked to assume a result (given a value) from the previous question but this result may or may not be correct. This is to prevent you from losing points on a second question because you made a mistake on a previous question. Instructions: n Please print your name and social security number on this exam. Also, put your signature on this exam. l On your scantron PRINT your name, your version, and your section number. To better protect your privacy also print your name on the backside of your scantron. l You have 50 minutes to complete this exam. The exam is open book, open notes, and open mind. You may use any type of calculator but please show all your work on the exam and mark all answers on the scantron. l Many of the questions follow the format of those in Adventures in Business Statistics. The remaining questions are either based on the Excel assignment or use an Adventures-like approach with problems nearly identical to those assigned in the textbook. l When you have completed the exam, please insert your scantron into the exam booklet and turn them in to your instructor. l No cheating. l Good luck and we wish you well on the exam. 1
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Based on advice from a statistics consultant, a human resources training specialist assigns 15 pages of equally difficult text to be typed by the same person before and after completing the corporate contract-training course. The raw data with the number of errors and Excel analysis using a 5% significance level are shown in the tables below. Use this information to answer the next three questions . Typist Before After 1 29 25 2 19 17 3 34 30 4 42 37 5 35 29 6 33 31 7 X X 8 X X 9 X X 10 X X Before After Mean 33.4 30.8 Variance 57.1556 29.9556 Observations 10 10 Pearson Correlation 0.1418 Hypothesized Mean Difference 0 df 9 t Stat 0.9470 P(T<=t) one-tail xxxxxx t Critical one-tail 1.833 P(T<=t) two-tail xxxxxx t Critical two-tail 2.262 1. What is the critical value (at the 5% level) of the appropriate test statistic to test the belief that there is a reduction in the mean number of errors if typists go through the contract-training course? A. 1.383 B. 0.9106 C. 2.262 D. 0.9470 E. 1.833* 2
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2. What is the calculated value of the appropriate test statistic to test the belief that there is a reduction in the mean number of errors if typists go through the contract-training course? A. 1.383 B. 0.9106 C. 0.9470 * D. 1.8331 E. 2.2622 3. Which of the following ranges best represents the p-value (observed level of significance) for testing the belief that there is a difference in the mean number of errors between typists who did not take the training course and those who completed the course? A.
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This note was uploaded on 03/09/2011 for the course DSC 3710 taught by Professor Staff during the Spring '09 term at North Texas.

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Exam1C. FA02 - COURSE MSCI 3710 EXAM 1 Version C S.S Print...

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