identify the population and the sample. Describe the sample data set. 26. A stud
ID: 3074024 • Letter: I
Question
identify the population and the sample. Describe the sample data set.
26. A study of 203 infants was conducted to find a link between fetal tobacco exposure and focused attention in infancy. (Source: Infant Behavior and Development)
28. A survey of 1100 travelers worldwide found that 53% of respondents with pets travel with their pets.
determine whether the number describes a population parameter or a sample statistic. Explain your reasoning.
36. A survey of 1058 college board members found that 56.3% think that college completion is a major priority or the most important priority for their board. (Source: Association of Governing Boards of Universities and Colleges)
determine the level of measurement of the data set. Explain your reasoning.
16. Business Schools The top ten business schools in the United States for a recent year according to Forbes are listed. (Source: Forbes Media LLC) 1. Stanford 6. Chicago (Booth) 2. Harvard 7. Pennsylvania (Wharton) 3. Northwestern (Kellogg) 8. UC Berkeley (Haas) 4. Columbia 9. MIT (Sloan) 5. Dartmouth (Tuck) 10. Cornell (Johnson)
20. Cell Phone are listed.
The times of the day when a person checks his or her cell phone
8:28 a.m. 11:25 a.m. 2:26 p.m. 5:28 p.m.
9:30 a.m. 11:46 a.m. 2:49 p.m. 5:57 p.m.
9:43 a.m. 12:27 p.m. 3:05 p.m. 8:17 p.m.
10:18 a.m. 2:18 p.m. 4:18 p.m.
determine whether the data are qualitative or quantitative, and determine the level of measurement of the data set.
30. Diving The scores for the gold medal winning diver in the men’s 10-meter platform event from the 2016 Summer Olympics are listed. (Source:
International Olympic Committee)
91.80 97.20
91.00 99.90
88.20 91.80
determine whether the study is an observational study or an experiment. Explain.
12. Researchers demonstrated that adults using an intensive program to lower systolic blood pressure to less than 120 millimeters of mercury reduce the risk of death from all causes by 27%. (Source: American Heart Association)
identify the sampling technique used, and discuss potential sources of bias (if any). Explain.
24. Questioning university students as they leave a fraternity party, a researcher asks 463 students about their study habits.
Explanation / Answer
26.
The sample is 203 infants selected for study.
The populaiton is all infants.
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28.
The sample is 1100 travelers selected for study.
The populaiton is all travelers world wide.
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36.
Since 56.3% shows the proprotion of boards members think that college completion is a major priority or the most important priority for their board in sample so it is sample proportion.
That is it is statistics.
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16.
Here the data is categorical and order can be define between the categories.
Level of measurement is ordinal.
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20.
It is a quantitative variable.
Level of measurement is ratio.
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30.
It is a quantitative variable.
Level of measurement is ratio.
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12.
Since adults using an intensive program to lower systolic blood pressure so it is an experimental study.
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