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Chapter 1: Q2-20BSC (page 1)
Determine whether the data are from discrete data or continuous data set.
The Insurance Institute for Highway Safety collects data consisting of the numbers of motor vehicle fatalities caused by driving while texting.
The number of fatalities caused while texting and driving is discrete data.
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In Exercises 17鈥�20, refer to the sample of body temperatures (degrees Fahrenheit) in the table below. (The body temperatures are from a data set in Appendix B.)
Subject
| 1 | 2 | 3 | 4 | 5 | |
| 8 AM | 97 | 98.5 | 97.6 | 97.7 | 98.7 |
| 12 AM | 97.6 | 97.8 | 98 | 98.4 | 98.4 |
Source: The listed body temperatures were obtained from Dr. Steven Wasserman, Dr. Philip Mackowiak, and Dr. Myron Levine, who were researchers at the University of Maryland. Is the source of the data likely to be biased?
Hospitals Which of the following best describes the level of measurement of the numbers 1, 1438, 66, and 413 from Exercise 1: nominal, ordinal, interval, ratio?
In Exercises 29鈥�36, answer the given questions, which are related to percentages.
Chillax USA Today reported results from a Research Now for Keurig survey in which 1458 men and 1543 women were asked this: 鈥淚n a typical week, how often can you kick back and relax?鈥�
a. Among the women, 19% responded with 鈥渞arely, if ever.鈥� What is the exact value that is 19% of the number of women surveyed?
b. Could the result from part (a) be the actual number of women who responded with 鈥渞arely, if ever鈥�? Why or why not?
c. What is the actual number of women who responded with 鈥渞arely, if ever鈥�?
d. Among the men who responded, 219 responded with 鈥渞arely, if ever.鈥� What is the percentage of men who responded with 鈥渞arely, if ever.鈥�?
e. Consider the question that the subjects were asked. Is that question clear and unambiguous so that all respondents will interpret the question the same way? How might the survey be improved?
What鈥檚 Wrong with This Picture? The Newport Chronicle ran a survey by asking readers to call in their response to this question: 鈥淒o you support the development of atomic weapons that could kill millions of innocent people?鈥� It was reported that 20 readers responded and that 87% said 鈥渘o,鈥� while 13% said 鈥測es.鈥� Identify four major flaws in this survey.
The complete set of all housing units equal to 132,802,859 present in the United States represents a parameter.
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