In Exercises 17–20, refer to the sample of body temperatures (degrees Fahrenheit) in table below. (The body temperatures are from a data set in Appendix B.)
18. 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?
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