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BADM 503 MODULE 1 SOLVED 100% CORRECT
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"Bob didn't wear his lucky T-shirt to class, so he failed his chemistry exam." This best illustrates which fallacy? - ANSWER-Post hoc reasoning "Smoking is not harmful. My Aunt Harriet smoked, but lived to age 90." This best illustrates which fallacy? - ANSWER-Small sample generalization "Tom's SUV rolled over. SUVs are dangerous." This best illustrates which fallacy? - ANSWER-Small Sample Generalization A list of the salaries, ages, and years of experience for 50 CEO's is a multivariate data set. - ANSWER-TRUE A manager chose two people from his team of eight to give an oral presentation because she felt they were representative of the whole team's views. What sampling technique did she use in choosing these two people? - ANSWER-Judgment A population has groups that have a small amount of variation within them, but large variation among or between the groups themselves. The proper sampling technique is: - ANSWER-Stratified A sampling technique used when groups are defined by their geographical location is: - ANSWER-Cluster An accounting professor wishing to know how many MBA students would take a summer elective in international accounting did a survey of the class she was teaching. Which kind of sample is this? - ANSWER-Convenience An investment firm rates bonds for AardoCo Inc. as "B+", while bonds of Deva Corp. are rated "AA." Which level of measurement would be appropriate for such data? - ANSWER-Ordinal Automobile exhaust emission of CO2 (milligrams per mile) is __________ data. - ANSWER-Ratio Because 25 percent of the students in my morning statistics class watch eight or more hours of television a week, I conclude that 25 percent of all students at the university watch eight or more hours of television a week. The most important logical weakness of this conclusion would be: - ANSWER-using a sample that may not be representative of all students. Before deciding whether to assess heavy fines against noisy airlines, which sampling method would the Federal Aviation Administration probably use to measure the peak
noise from departing jets as measured by a ground-level observer at a point one mile from the end of the departure runway? - ANSWER-Stratified If we choose 50 random digits (0 through 9) using the random digit generator built into statistical software, we would most likely find that: - ANSWER-some numbers would occur more than once. Professor Hardtack chose a sample of 7 students from his statistics class of 35 students by picking every student who was wearing red that day. Which kind of sample is this? - ANSWER-Convenience Running times for 500 runers in a 5k race would be a univariate data set. - ANSWER- TRUE Sampling bias can best be reduced by: - ANSWER-utilizing random sampling. Student's evaluation of a professor's teaching - ANSWER-Interval Temperature in degrees Celsius at 7 o'clock this morning - ANSWER- The Centers for Disease Control and Prevention (CDC) wants to estimate the average extra hospital stay that occurs when heart surgery patients experience postoperative atrial fibrillation. They divide the United States into nine regions. In each region, hospitals are selected at random within each hospital size group (small, medium, large). In each hospital, heart surgery patients are sampled according to known percentages by age group (under 50, 50 to 64, 65 and over) and gender (male, female). This procedure combines which sampling methods? - ANSWER-Cluster Stratified Simple Random The duration a flight from Boston to Minneapolis - ANSWER- The NASA experiences with the Challenger and Columbia disasters suggest that: - ANSWER-limited data may still contain important clues. The number of Nobel Prize-winning faculty at Oxnard University - ANSWER-Ordinal The number of passengers "bumped" on a particular airline flight is ______ data. - ANSWER-Ratio The type of charge card used by a customer (Visa, MasterCard, AmEx) - ANSWER- Thirty work orders are selected from a filing cabinet containing 500 work order folders by choosing every 15th folder. Which sampling method is this? - ANSWER-Systematic What sampling method is often quicker and cheaper? - ANSWER-Convenience