Preparation%20for%20Final%20S11 - Preparation for Final...

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Preparation for Final Examination (max 40%+5% of Total Grade) Duration 2hrs=120 min Close book Exam ! Examination Schedule   Code Course  Title Time  From Time  To Hall Section Instructor Number  of  Students Friday, May 06, 2011  GEN240 2 Business  Statistical  Analysis 11:30 13:30 #1/Val.bld.,  4, 5 Bakhyt  Baideldinov,  D.Sc. 98 INSTRUCTIONS FOR FINAL EXAM 1. Be in your hall 5 minutes before the beginning of the exam 2. Bring: PEN CALCULATOR ( not allowed to use mobile phones as a calculator ). 3. Show all your work. Answers without supporting calculations or explanations receive zero credit! 4. KIMEP exam rules apply. Talking, looking at other students' papers, sharing of anything (information or physical items), using unauthorized notes or tools is considered as cheating. Any cheating results in zero points on exam and in disciplinary action . Contents of the Final Exam
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1. Lecture 3 Probability. 2. Lecture 4 Discrete Probability Distributions. The Poisson Distribution 3. Lecture 8 Confidence Interval for a Population Proportion. (Large-Sample, z -statistic). Determining the Sample Size. 4. Lecture 10 Observed Significance Levels: p-Values 5. Lecture 11 Comparing Two Population Means: Independent Sampling (Large Samples) 6. Lecture 14 Testing Category Probabilities: Two- Ways Contingency Table. 2 χ statistic 7. Lecture 15 Simple Linear Regression. Fitting the Model: The Least Squares Approach 8. Lecture 16 Simple Linear Regression. Making Inferences about the Slope β 1 .The Coefficient of Correlation. 9. Lecture 17 Using the Model For Estimation and Prediction.
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SAMPLE PROBLEMS 1. Suppose that a random sample of high schools yields the following table: Teacher’s salary Consumption of liquor High Low High 16 24 Medium 18 10 Low 40 6 a. From the contingency table, the researcher concluded that there is relationship between a teacher’s tendency to consume alcoholic beverages and his or her salary. Do you agree? Test using 01 . 0 = α . b. Construct a 99% confidence interval for the true percentage of teachers with high salary and high consumption of liquor. Is the sample size large enough to construct a valid confidence interval for p ? c. How large a sample size is necessary to estimate the proportion of teachers with high salary and high consumption of liquor within 5% with 99% confidence? 2. A medical researcher is interested in determining if there is a relationship between adults over 50 who walk regularly and low, moderate, and high blood pressure. A random sample of 236 adults over 50 is selected and results are given below. Blood
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Preparation%20for%20Final%20S11 - Preparation for Final...

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