Dr loggins conducts a study examining the

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162. Dr. Loggins conducts a study examining the relationship between shoe size and scores on a math aptitude test in a sample of 15,000 young adults. He finds a significant negative correlation ( r = –.06) between these two variables. What should he conclude from his data? A) The smaller a person's feet, the better their math scores. B) He found a statistically significant result that he can generalize to the population. C) There is no real practical significance to this result. D) His results will allow him to reliably predict math scores from foot size.
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Difficulty: 3 QuestionID: 02-1-162 Topic: Inferential Statistics—Testing Hypotheses Skill: Applied/Conceptual Objective: 2.4b Answer: C) There is no real practical significance to this result.
163. In sciences and social sciences, another term for real-world importance is Difficulty: 2 QuestionID: 02-1-163 Topic: Inferential Statistics—Testing Hypotheses Skill: Factual Objective: 2.4b
164. A therapist wishes to show that his new therapy is a marked improvement over the current best available therapy. To do so, he examines the number of participants who improved with each. A total of 100 participants received his treatment (and 50 of them improved). A total of 80 participants received the alternative treatment (and 40 of them improved). What should the therapist conclude? Difficulty: 3 QuestionID: 02-1-164 Topic: How People Lie with Statistics Skill: Applied/Conceptual Objective: 2.4c
165. If you read that the average cost of a home in Fancy City costs $3 000 000, you might think that you could never afford to buy a house there. If you knew that most houses cost less than $200 000, but a few houses were multimillion-dollar mansions, you would have a different impression. What leads to these different impressions of the same data? Difficulty: 3 QuestionID: 02-1-165 Topic: How People Lie with Statistics Skill: Applied/Conceptual Objective: 2.4c
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