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COMPREHENSIVE EXAMINATION Managerial Statistics SET A First Semester SY 2021 to 2022 Part A. TRUE OR FALSE 1. The amount of time a student spent studying for an exam will be measured on a ratio scale. True 2. The amount of calories contained in a pack of 12-ounce cheese is an example of a discrete variable. False (Continuous Variable) 3. As a general rule, an observation is considered an extreme value if its Z score is less than 3 False 4. The larger the Z score, the further (farther?) is the distance from the observation to the median. False 5. An economics professor bases his final grade on homework, two midterm examinations, and a final examination. The homework counts 10% toward the final grade, while each midterm examination counts 25%. The remaining portion consists of the final examination. If a student scored 95% in homework, 70% on the first midterm examination, 96% on the second midterm examination, and 72% on the final, his final average is 79.8%. True 6. In a set of numerical data, the value for Q2 is always halfway between Q1 and Q3. False 7. The number of customers arriving at a department store in a 5-minute period has a Poisson distribution. True 8. The professor of a business statistics class wanted to find out the average amount of time per week her students spent studying for the class. She divided the fifty students on her roster into ten groups starting from the first student on the roster. The first student was randomly selected from the first group. Then every tenth student was selected from the remaining students. This is an example of a cluster sample. False 9. When the F test is used for ANOVA, the rejection region is always in the right tail. True 10. If P (A or B) = 1.0, then A and B must be collectively exhaustive. True