Introductory Statistics (10th Edition)
10th Edition
ISBN: 9780321989178
Author: Neil A. Weiss
Publisher: PEARSON
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Textbook Question
Chapter 1.1, Problem 19E
In Exercises 1.17–1.22, state whether the investigation in question is an observational study or a designed experiment. Justify your answer in each case.
Sex, Sleep, and PTSD. In the article, “One’s Sex, Sleep, and Posttraumatic Stress Disorder” (Biology of Sex Differences, Vol. 3, No. 29, pp. 1–7), I. Kobayashi et al. study the relationship between one’s sex, sleep patterns, and posttraumatic stress disorder (PTSD) after trauma exposure. The authors report that women have a higher lifetime prevalence of PTSD as well as a greater risk of developing PTSD following trauma exposure. Relationships between sleep and physical health have been documented in a number of studies, and the authors explore the possibility that disruptive sleep habits are common among people with PTSD and also a possible risk factor for the development of PTSD. A questionnaire of men and women with and without PTSD produced data on their sleep habits.
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Individuals with strong religious beliefs often turn to their faith to cope with stressful life events. Relying on God's love and caring is referred to as
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Andrea Phelps and her colleagues studied the relationship between positive religious coping and the type of care received by terminally ill cancer
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near death in patients with advanced cancer." Journal of the American Medical Association, 301 (2009): 1140-1147.]
Suppose another researcher conducts a similar study but uses a sample of patients whose religious traditions are more varied than the patients in
the Phelps study. He samples 400 terminally ill patients to see whether their practicing a religion is related to how likely they are to seek intensive
life-prolonging care.
The following table shows the results of the study.
Observed Frequencies
Seeks Intensive…
A recent study randomly selected women from various countries around the world and collected information about diet and health. The women who at a Paleo diet had lower rates of Osteoporosis when compared to the other women in the study.
A. Which is the explanatory variable and why.
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A clinical researcher would like to know whether a certain drug is more effective at treating
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This study is a(n):
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Chapter 1 Solutions
Introductory Statistics (10th Edition)
Ch. 1.1 - Define the following terms: a. Population b....Ch. 1.1 - What are the two major types of statistics?...Ch. 1.1 - Identify some methods used in descriptive...Ch. 1.1 - Explain two ways in which descriptive statistics...Ch. 1.1 - Define the following terms: a. Observational study...Ch. 1.1 - Fill in the following blank: Observational studies...Ch. 1.1 - In Exercises 1.71.12, classify each of the studies...Ch. 1.1 - In Exercises 1.71.12, classify each of the studies...Ch. 1.1 - In Exercises 1.71.12, classify each of the studies...Ch. 1.1 - In Exercises 1.71.12, classify each of the studies...
Ch. 1.1 - In Exercises 1.71.12, classify each of the studies...Ch. 1.1 - In Exercises 1.71.12, classify each of the studies...Ch. 1.1 - Thoughts on Evolution. In an article titled Who...Ch. 1.1 - Big-Banks Break-up. A nationwide survey of 1000...Ch. 1.1 - Genocide. The document American Attitudes about...Ch. 1.1 - Vasectomies and Prostate Cancer. Refer to the...Ch. 1.1 - In Exercises 1.171.22, state whether the...Ch. 1.1 - In Exercises 1.171.22, state whether the...Ch. 1.1 - In Exercises 1.171.22, state whether the...Ch. 1.1 - In Exercises 1.171.22, state whether the...Ch. 1.1 - In Exercises 1.171.22, state whether the...Ch. 1.1 - In Exercises 1.171.22, state whether the...Ch. 1.1 - Ballistic Fingerprinting. In an on-line press...Ch. 1.1 - Causes of Death. The National Center for Health...Ch. 1.1 - Medical Testing on Animals. In its Summer 2013...Ch. 1.1 - Lobbying Congress. In the special report, Bitter...Ch. 1.2 - Explain why a census is often not the best way to...Ch. 1.2 - Identify two statistical methods other than a...Ch. 1.2 - In sampling, explain why obtaining a...Ch. 1.2 - Provide a scenario of your own in which a sample...Ch. 1.2 - Regarding probability sampling: a. What is it? b....Ch. 1.2 - Regarding simple random sampling: a. What is...Ch. 1.2 - The inferential procedures discussed in this book...Ch. 1.2 - Identify two methods for obtaining a simple random...Ch. 1.2 - What is the acronym used for simple random...Ch. 1.2 - The members of a population are numbered 15. a....Ch. 1.2 - The members of a population are numbered 14. a....Ch. 1.2 - The members of a population are numbered 190. a....Ch. 1.2 - The members of a population are numbered 150. a....Ch. 1.2 - Memorial Day Poll. In the year 2000, an on-line...Ch. 1.2 - Estimating Median Income. Explain why a sample of...Ch. 1.2 - Oklahoma State Officials. The five top Oklahoma...Ch. 1.2 - Oklahoma State Officials. The five top Oklahoma...Ch. 1.2 - Best-Selling Albums. The Recording Industry...Ch. 1.2 - Best-Selling Albums. Refer to Exercise 1.44. a....Ch. 1.2 - Best-Selling Albums. Refer to Exercise 1.44. a....Ch. 1.2 - Social Networking Websites. From Wikipedia.com, we...Ch. 1.2 - Keno. In the game of keno, 20 balls are selected...Ch. 1.2 - The International 500. Each year, Fortune Magazine...Ch. 1.2 - Prob. 50ECh. 1.2 - Prob. 51ECh. 1.2 - Undercoverage. Oftentimes, an accurate and...Ch. 1.2 - Nonresponse. When responses are not obtained from...Ch. 1.2 - Response bias. When the behavior of the...Ch. 1.3 - In each of Exercises 1.551.58, fill in the...Ch. 1.3 - In each of Exercises 1.551.58, fill in the...Ch. 1.3 - In each of Exercises 1.551.58, fill in the...Ch. 1.3 - In each of Exercises 1.551.58, fill in the...Ch. 1.3 - The members of a population have been numbered...Ch. 1.3 - The members of a population have been numbered...Ch. 1.3 - The members of a population have been numbered...Ch. 1.3 - The members of a population have been numbered...Ch. 1.3 - The members of a population have been numbered...Ch. 1.3 - The members of a population have been numbered...Ch. 1.3 - Ghost of Speciation Past. In the article, Ghost of...Ch. 1.3 - Number of Farms. The National Agricultural...Ch. 1.3 - John F. Kennedy. In one of his books, Ted...Ch. 1.3 - Litigation Surveys. In the article,...Ch. 1.3 - Immunization of Schoolchildren. In the article,...Ch. 1.3 - University Parking Facilities. During one year, a...Ch. 1.3 - The International 500. In Exercise 1.49 on page...Ch. 1.3 - Keno. In the game of keno, 20 balls are selected...Ch. 1.3 - Sampling Dorm Residents. Students in the...Ch. 1.3 - Best High Schools. In an issue of Newsweek (Vol....Ch. 1.3 - U.S. House of Representatives. There are 435...Ch. 1.3 - Prob. 76ECh. 1.3 - Prob. 77ECh. 1.3 - In simple random sampling, all samples of a given...Ch. 1.3 - In simple random sampling, it is also true that...Ch. 1.3 - In simple random sampling, it is also true that...Ch. 1.4 - In a designed experiment, a. what are the...Ch. 1.4 - State and explain the significance of the three...Ch. 1.4 - Prob. 83ECh. 1.4 - In this section, we discussed two types of...Ch. 1.4 - In a designed experiment, there is one factor with...Ch. 1.4 - In a designed experiment, there is one factor with...Ch. 1.4 - Prob. 87ECh. 1.4 - In a designed experiment, there are two factors,...Ch. 1.4 - In a designed experiment, there are two factors....Ch. 1.4 - Adverse Effects of Prozac. Prozac (fluoxetine...Ch. 1.4 - Treating Heart Failure. In the journal article...Ch. 1.4 - In Exercises 1.921.97, we present descriptions of...Ch. 1.4 - Prob. 93ECh. 1.4 - In Exercises 1.921.97, we present descriptions of...Ch. 1.4 - Prob. 95ECh. 1.4 - In Exercises 1.921.97, we present descriptions of...Ch. 1.4 - In Exercises 1.921.97, we present descriptions of...Ch. 1.4 - Prob. 98ECh. 1.4 - Dental Hygiene: Which Toothbrush? In an experiment...Ch. 1.4 - The Salk Vaccine. In Exercise 1.17 on page 8, we...Ch. 1.4 - In sampling from a population, state which type of...Ch. 1 - Almost any inferential study involves aspects of...Ch. 1 - Regarding observational studies and designed...Ch. 1 - Before planning and conducting a study to obtain...Ch. 1 - Explain the meaning of a. a representative sample....Ch. 1 - Which of the following sampling procedures involve...Ch. 1 - Describe each of the following sampling methods...Ch. 1 - Identify and explain the significance of the three...Ch. 1 - Baseball Scores. From ESPN MLB Scoreboard, we...Ch. 1 - Working Lottery Winners. In a national poll taken...Ch. 1 - British Backpacker Tourists. Research by G. Visser...Ch. 1 - Peanut Allergies. In the article Food Allergy...Ch. 1 - Persistent Poverty and IQ. An article appearing in...Ch. 1 - Wasp Hierarchical Status. In an issue of Discover...Ch. 1 - Incomes of College Students Parents. A researcher...Ch. 1 - On-Time Airlines. From the FlightStats On-time...Ch. 1 - Top North American Athletes. As part of ESPNs...Ch. 1 - QuickVote. TalkBack Live, a production of CNN,...Ch. 1 - Leisure Activities and Dementia. An article...Ch. 1 - Hepatitis B and Pancreatic Cancer. The article...Ch. 1 - Top North American Athletes. Refer to Problem 17....Ch. 1 - Water Quality. In the article Randomized...Ch. 1 - Prob. 23RPCh. 1 - Plant Density and Tomato Yield. In Effects of...Ch. 1 - Child-Proof Bottles. Designing medication...Ch. 1 - Prob. 26RPCh. 1 - Comparing Gas Mileages. An experiment is to be...Ch. 1 - The file named Focus.txt in the Focus Database...Ch. 1 - At the beginning of this chapter, we discussed the...
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