Home for the Holidays ~ Thanksgiving week is one of the...

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Stats 250 F18 Exam 2 Solutions, Common Errors, and Reference Page Question Points Possible 1 1 9 2 2 11 3 3 10 4 4 9 5 5 10 6 6 9 7 7 9 8 8 8 Total -- 75 Instructions: 1. Fill in your name, UMID number, seat, and Lab Section with GSI name in the spaces provided above. 2. You may use a calculator and the provided blue Stats Help Card. No other aids of any kind are permitted. 3. Some questions require that you clearly write your final answer in a designated place . 4. No credit will be given for providing only the answer without correct supporting work. You must show how you arrived at your answer (formula used, plug in values, draw a picture, etc.). (Giving steps that are specific to your calculator is not sufficient work.) 5. When appropriate , you must carry out numerical answers to 4 decimal places . 6. Final answers must be legible and clear . If multiple answers are given, the worst will be graded. 7. There are 8 pages to your exam (excluding this cover page). 8. Points for each question are indicated in square brackets [X points] . 9. Exams are expected to be returned to students electronically by the end of next week. 10. Please help us maintain the high standards of the University of Michigan. We are Michigan. And we are proud. Excerpt from the LSA Academic Integrity Statement: “…The College holds all members of its community to high standards of scholarship and integrity. To accomplish its mission of providing an optimal educational environment and developing leaders of society, the College promotes the assumption of personal responsibility and integrity and prohibits all forms of academic dishonesty and misconduct. Academic dishonesty may be understood as any action or attempted action that may result in creating an unfair academic advantage for oneself or an unfair academic advantage or disadvantage for any other member or members of the academic community...” No questions will be answered during the exam . Answer each question the best you can. Make sure you include relevant formulas with notation and your calculations. Good Luck! Required : Review instructions and initial here
1. Home for the Holidays ~ Thanksgiving week is one of the most traveled weeks of the year. University officials at Southern University wish to assess if there is a significant difference between the proportion of in-state students and the proportion of out-of-state students who travel over Thanksgiving break. Independent random samples of such students were surveyed and their responses are reported below. Are you traveling over Thanksgiving break? Yes No Total 1 = In-State 64 16 2 = Out-of-State 56 28 a. Use the data above to provide an estimate of the common population proportion. Include the appropriate symbol with your final answer. [3] 80 84
F18 Exam 2 page 1

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